20447700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:151

約数の個数: 216

約数和(自身を含む): 74807712

約数和(自身を除く): 54360012

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 25, 26, 28, 30, 35, 39, 42, 49, 50, 52, 60, 65, 70, 75, 78, 84, 91, 98, 100, 105, 107, 130, 140, 147, 150, 156, 175, 182, 195, 196, 210, 214, 245, 260, 273, 294, 300, 321, 325, 350, 364, 390, 420, 428, 455, 490, 525, 535, 546, 588, 637, 642, 650, 700, 735, 749, 780, 910, 975, 980, 1050, 1070, 1092, 1225, 1274, 1284, 1300, 1365, 1391, 1470, 1498, 1605, 1820, 1911, 1950, 2100, 2140, 2247, 2275, 2450, 2548, 2675, 2730, 2782, 2940, 2996, 3185, 3210, 3675, 3745, 3822, 3900, 4173, 4494, 4550, 4900, 5243, 5350, 5460, 5564, 6370, 6420, 6825, 6955, 7350, 7490, 7644, 8025, 8346, 8988, 9100, 9555, 9737, 10486, 10700, 11235, 12740, 13650, 13910, 14700, 14980, 15729, 15925, 16050, 16692, 18725, 19110, 19474, 20865, 20972, 22470, 26215, 27300, 27820, 29211, 31458, 31850, 32100, 34775, 37450, 38220, 38948, 41730, 44940, 47775, 48685, 52430, 56175, 58422, 62916, 63700, 68159, 69550, 74900, 78645, 83460, 95550, 97370, 104325, 104860, 112350, 116844, 131075, 136318, 139100, 146055, 157290, 191100, 194740, 204477, 208650, 224700, 243425, 262150, 272636, 292110, 314580, 340795, 393225, 408954, 417300, 486850, 524300, 584220, 681590, 730275, 786450, 817908, 973700, 1022385, 1363180, 1460550, 1572900, 1703975, 2044770, 2921100, 3407950, 4089540, 5111925, 6815900, 10223850, 20447700]

約数ペア:

[(1, 20447700), (2, 10223850), (3, 6815900), (4, 5111925), (5, 4089540), (6, 3407950), (7, 2921100), (10, 2044770), (12, 1703975), (13, 1572900), (14, 1460550), (15, 1363180), (20, 1022385), (21, 973700), (25, 817908), (26, 786450), (28, 730275), (30, 681590), (35, 584220), (39, 524300), (42, 486850), (49, 417300), (50, 408954), (52, 393225), (60, 340795), (65, 314580), (70, 292110), (75, 272636), (78, 262150), (84, 243425), (91, 224700), (98, 208650), (100, 204477), (105, 194740), (107, 191100), (130, 157290), (140, 146055), (147, 139100), (150, 136318), (156, 131075), (175, 116844), (182, 112350), (195, 104860), (196, 104325), (210, 97370), (214, 95550), (245, 83460), (260, 78645), (273, 74900), (294, 69550), (300, 68159), (321, 63700), (325, 62916), (350, 58422), (364, 56175), (390, 52430), (420, 48685), (428, 47775), (455, 44940), (490, 41730), (525, 38948), (535, 38220), (546, 37450), (588, 34775), (637, 32100), (642, 31850), (650, 31458), (700, 29211), (735, 27820), (749, 27300), (780, 26215), (910, 22470), (975, 20972), (980, 20865), (1050, 19474), (1070, 19110), (1092, 18725), (1225, 16692), (1274, 16050), (1284, 15925), (1300, 15729), (1365, 14980), (1391, 14700), (1470, 13910), (1498, 13650), (1605, 12740), (1820, 11235), (1911, 10700), (1950, 10486), (2100, 9737), (2140, 9555), (2247, 9100), (2275, 8988), (2450, 8346), (2548, 8025), (2675, 7644), (2730, 7490), (2782, 7350), (2940, 6955), (2996, 6825), (3185, 6420), (3210, 6370), (3675, 5564), (3745, 5460), (3822, 5350), (3900, 5243), (4173, 4900), (4494, 4550)]