201721520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:284

約数の個数: 240

約数和(自身を含む): 637250880

約数和(自身を除く): 435529360

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 121, 130, 140, 143, 154, 176, 182, 208, 220, 229, 242, 260, 280, 286, 308, 364, 385, 440, 455, 458, 484, 520, 560, 572, 605, 616, 715, 728, 770, 847, 880, 910, 916, 968, 1001, 1040, 1144, 1145, 1210, 1232, 1430, 1456, 1540, 1573, 1603, 1694, 1820, 1832, 1936, 2002, 2288, 2290, 2420, 2519, 2860, 2977, 3080, 3146, 3206, 3388, 3640, 3664, 4004, 4235, 4580, 4840, 5005, 5038, 5720, 5954, 6160, 6292, 6412, 6776, 7280, 7865, 8008, 8015, 8470, 9160, 9680, 10010, 10076, 11011, 11440, 11908, 12584, 12595, 12824, 13552, 14885, 15730, 16016, 16030, 16940, 17633, 18320, 20020, 20152, 20839, 22022, 23816, 25168, 25190, 25648, 27709, 29770, 31460, 32060, 32747, 33880, 35266, 40040, 40304, 41678, 44044, 47632, 50380, 55055, 55418, 59540, 62920, 64120, 65494, 67760, 70532, 80080, 83356, 88088, 88165, 100760, 104195, 110110, 110836, 119080, 125840, 128240, 130988, 138545, 141064, 163735, 166712, 176176, 176330, 193963, 201520, 208390, 220220, 221672, 229229, 238160, 261976, 277090, 282128, 327470, 333424, 352660, 360217, 387926, 416780, 440440, 443344, 458458, 523952, 554180, 654940, 705320, 720434, 775852, 833560, 880880, 916916, 969815, 1108360, 1146145, 1309880, 1410640, 1440868, 1551704, 1667120, 1801085, 1833832, 1939630, 2216720, 2292290, 2521519, 2619760, 2881736, 3103408, 3602170, 3667664, 3879260, 4584580, 5043038, 5763472, 7204340, 7758520, 9169160, 10086076, 12607595, 14408680, 15517040, 18338320, 20172152, 25215190, 28817360, 40344304, 50430380, 100860760, 201721520]

約数ペア:

[(1, 201721520), (2, 100860760), (4, 50430380), (5, 40344304), (7, 28817360), (8, 25215190), (10, 20172152), (11, 18338320), (13, 15517040), (14, 14408680), (16, 12607595), (20, 10086076), (22, 9169160), (26, 7758520), (28, 7204340), (35, 5763472), (40, 5043038), (44, 4584580), (52, 3879260), (55, 3667664), (56, 3602170), (65, 3103408), (70, 2881736), (77, 2619760), (80, 2521519), (88, 2292290), (91, 2216720), (104, 1939630), (110, 1833832), (112, 1801085), (121, 1667120), (130, 1551704), (140, 1440868), (143, 1410640), (154, 1309880), (176, 1146145), (182, 1108360), (208, 969815), (220, 916916), (229, 880880), (242, 833560), (260, 775852), (280, 720434), (286, 705320), (308, 654940), (364, 554180), (385, 523952), (440, 458458), (455, 443344), (458, 440440), (484, 416780), (520, 387926), (560, 360217), (572, 352660), (605, 333424), (616, 327470), (715, 282128), (728, 277090), (770, 261976), (847, 238160), (880, 229229), (910, 221672), (916, 220220), (968, 208390), (1001, 201520), (1040, 193963), (1144, 176330), (1145, 176176), (1210, 166712), (1232, 163735), (1430, 141064), (1456, 138545), (1540, 130988), (1573, 128240), (1603, 125840), (1694, 119080), (1820, 110836), (1832, 110110), (1936, 104195), (2002, 100760), (2288, 88165), (2290, 88088), (2420, 83356), (2519, 80080), (2860, 70532), (2977, 67760), (3080, 65494), (3146, 64120), (3206, 62920), (3388, 59540), (3640, 55418), (3664, 55055), (4004, 50380), (4235, 47632), (4580, 44044), (4840, 41678), (5005, 40304), (5038, 40040), (5720, 35266), (5954, 33880), (6160, 32747), (6292, 32060), (6412, 31460), (6776, 29770), (7280, 27709), (7865, 25648), (8008, 25190), (8015, 25168), (8470, 23816), (9160, 22022), (9680, 20839), (10010, 20152), (10076, 20020), (11011, 18320), (11440, 17633), (11908, 16940), (12584, 16030), (12595, 16016), (12824, 15730), (13552, 14885)]