21721700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 216

約数和(自身を含む): 66495744

約数和(自身を除く): 44774044

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 25, 26, 28, 31, 35, 44, 49, 50, 52, 55, 62, 65, 70, 77, 91, 98, 100, 110, 124, 130, 140, 143, 154, 155, 175, 182, 196, 217, 220, 245, 260, 275, 286, 308, 310, 325, 341, 350, 364, 385, 403, 434, 455, 490, 539, 550, 572, 620, 637, 650, 682, 700, 715, 770, 775, 806, 868, 910, 980, 1001, 1078, 1085, 1100, 1225, 1274, 1300, 1364, 1430, 1519, 1540, 1550, 1612, 1705, 1820, 1925, 2002, 2015, 2156, 2170, 2275, 2387, 2450, 2548, 2695, 2821, 2860, 3038, 3100, 3185, 3410, 3575, 3850, 4004, 4030, 4340, 4433, 4550, 4774, 4900, 5005, 5390, 5425, 5642, 6076, 6370, 6820, 7007, 7150, 7595, 7700, 8060, 8525, 8866, 9100, 9548, 10010, 10075, 10780, 10850, 11284, 11935, 12740, 13475, 14014, 14105, 14300, 15190, 15925, 16709, 17050, 17732, 19747, 20020, 20150, 21700, 22165, 23870, 25025, 26950, 28028, 28210, 30380, 31031, 31850, 33418, 34100, 35035, 37975, 39494, 40300, 44330, 47740, 50050, 53900, 56420, 59675, 62062, 63700, 66836, 70070, 70525, 75950, 78988, 83545, 88660, 98735, 100100, 110825, 119350, 124124, 140140, 141050, 151900, 155155, 167090, 175175, 197470, 217217, 221650, 238700, 282100, 310310, 334180, 350350, 394940, 417725, 434434, 443300, 493675, 620620, 700700, 775775, 835450, 868868, 987350, 1086085, 1551550, 1670900, 1974700, 2172170, 3103100, 4344340, 5430425, 10860850, 21721700]

約数ペア:

[(1, 21721700), (2, 10860850), (4, 5430425), (5, 4344340), (7, 3103100), (10, 2172170), (11, 1974700), (13, 1670900), (14, 1551550), (20, 1086085), (22, 987350), (25, 868868), (26, 835450), (28, 775775), (31, 700700), (35, 620620), (44, 493675), (49, 443300), (50, 434434), (52, 417725), (55, 394940), (62, 350350), (65, 334180), (70, 310310), (77, 282100), (91, 238700), (98, 221650), (100, 217217), (110, 197470), (124, 175175), (130, 167090), (140, 155155), (143, 151900), (154, 141050), (155, 140140), (175, 124124), (182, 119350), (196, 110825), (217, 100100), (220, 98735), (245, 88660), (260, 83545), (275, 78988), (286, 75950), (308, 70525), (310, 70070), (325, 66836), (341, 63700), (350, 62062), (364, 59675), (385, 56420), (403, 53900), (434, 50050), (455, 47740), (490, 44330), (539, 40300), (550, 39494), (572, 37975), (620, 35035), (637, 34100), (650, 33418), (682, 31850), (700, 31031), (715, 30380), (770, 28210), (775, 28028), (806, 26950), (868, 25025), (910, 23870), (980, 22165), (1001, 21700), (1078, 20150), (1085, 20020), (1100, 19747), (1225, 17732), (1274, 17050), (1300, 16709), (1364, 15925), (1430, 15190), (1519, 14300), (1540, 14105), (1550, 14014), (1612, 13475), (1705, 12740), (1820, 11935), (1925, 11284), (2002, 10850), (2015, 10780), (2156, 10075), (2170, 10010), (2275, 9548), (2387, 9100), (2450, 8866), (2548, 8525), (2695, 8060), (2821, 7700), (2860, 7595), (3038, 7150), (3100, 7007), (3185, 6820), (3410, 6370), (3575, 6076), (3850, 5642), (4004, 5425), (4030, 5390), (4340, 5005), (4433, 4900), (4550, 4774)]