81319560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{739}}^1$

素因数の和:891

約数の個数: 128

約数和(自身を含む): 281318400

約数和(自身を除く): 199998840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 210, 262, 280, 393, 420, 524, 655, 739, 786, 840, 917, 1048, 1310, 1478, 1572, 1834, 1965, 2217, 2620, 2751, 2956, 3144, 3668, 3695, 3930, 4434, 4585, 5173, 5240, 5502, 5912, 7336, 7390, 7860, 8868, 9170, 10346, 11004, 11085, 13755, 14780, 15519, 15720, 17736, 18340, 20692, 22008, 22170, 25865, 27510, 29560, 31038, 36680, 41384, 44340, 51730, 55020, 62076, 77595, 88680, 96809, 103460, 110040, 124152, 155190, 193618, 206920, 290427, 310380, 387236, 484045, 580854, 620760, 677663, 774472, 968090, 1161708, 1355326, 1452135, 1936180, 2032989, 2323416, 2710652, 2904270, 3388315, 3872360, 4065978, 5421304, 5808540, 6776630, 8131956, 10164945, 11617080, 13553260, 16263912, 20329890, 27106520, 40659780, 81319560]

約数ペア:

[(1, 81319560), (2, 40659780), (3, 27106520), (4, 20329890), (5, 16263912), (6, 13553260), (7, 11617080), (8, 10164945), (10, 8131956), (12, 6776630), (14, 5808540), (15, 5421304), (20, 4065978), (21, 3872360), (24, 3388315), (28, 2904270), (30, 2710652), (35, 2323416), (40, 2032989), (42, 1936180), (56, 1452135), (60, 1355326), (70, 1161708), (84, 968090), (105, 774472), (120, 677663), (131, 620760), (140, 580854), (168, 484045), (210, 387236), (262, 310380), (280, 290427), (393, 206920), (420, 193618), (524, 155190), (655, 124152), (739, 110040), (786, 103460), (840, 96809), (917, 88680), (1048, 77595), (1310, 62076), (1478, 55020), (1572, 51730), (1834, 44340), (1965, 41384), (2217, 36680), (2620, 31038), (2751, 29560), (2956, 27510), (3144, 25865), (3668, 22170), (3695, 22008), (3930, 20692), (4434, 18340), (4585, 17736), (5173, 15720), (5240, 15519), (5502, 14780), (5912, 13755), (7336, 11085), (7390, 11004), (7860, 10346), (8868, 9170)]