81371640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1327}}^1$

素因数の和:1421

約数の個数: 128

約数和(自身を含む): 283023360

約数和(自身を除く): 201651720

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, 73, 84, 105, 120, 140, 146, 168, 210, 219, 280, 292, 365, 420, 438, 511, 584, 730, 840, 876, 1022, 1095, 1327, 1460, 1533, 1752, 2044, 2190, 2555, 2654, 2920, 3066, 3981, 4088, 4380, 5110, 5308, 6132, 6635, 7665, 7962, 8760, 9289, 10220, 10616, 12264, 13270, 15330, 15924, 18578, 19905, 20440, 26540, 27867, 30660, 31848, 37156, 39810, 46445, 53080, 55734, 61320, 74312, 79620, 92890, 96871, 111468, 139335, 159240, 185780, 193742, 222936, 278670, 290613, 371560, 387484, 484355, 557340, 581226, 678097, 774968, 968710, 1114680, 1162452, 1356194, 1453065, 1937420, 2034291, 2324904, 2712388, 2906130, 3390485, 3874840, 4068582, 5424776, 5812260, 6780970, 8137164, 10171455, 11624520, 13561940, 16274328, 20342910, 27123880, 40685820, 81371640]

約数ペア:

[(1, 81371640), (2, 40685820), (3, 27123880), (4, 20342910), (5, 16274328), (6, 13561940), (7, 11624520), (8, 10171455), (10, 8137164), (12, 6780970), (14, 5812260), (15, 5424776), (20, 4068582), (21, 3874840), (24, 3390485), (28, 2906130), (30, 2712388), (35, 2324904), (40, 2034291), (42, 1937420), (56, 1453065), (60, 1356194), (70, 1162452), (73, 1114680), (84, 968710), (105, 774968), (120, 678097), (140, 581226), (146, 557340), (168, 484355), (210, 387484), (219, 371560), (280, 290613), (292, 278670), (365, 222936), (420, 193742), (438, 185780), (511, 159240), (584, 139335), (730, 111468), (840, 96871), (876, 92890), (1022, 79620), (1095, 74312), (1327, 61320), (1460, 55734), (1533, 53080), (1752, 46445), (2044, 39810), (2190, 37156), (2555, 31848), (2654, 30660), (2920, 27867), (3066, 26540), (3981, 20440), (4088, 19905), (4380, 18578), (5110, 15924), (5308, 15330), (6132, 13270), (6635, 12264), (7665, 10616), (7962, 10220), (8760, 9289)]