640900944

素因数分解:

$2^4\times 3^3\times {\mathrm{31}}^1\times {\mathrm{47857}}^1$

素因数の和:47905

約数の個数: 80

約数和(自身を含む): 1899005440

約数和(自身を除く): 1258104496

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 31, 36, 48, 54, 62, 72, 93, 108, 124, 144, 186, 216, 248, 279, 372, 432, 496, 558, 744, 837, 1116, 1488, 1674, 2232, 3348, 4464, 6696, 13392, 47857, 95714, 143571, 191428, 287142, 382856, 430713, 574284, 765712, 861426, 1148568, 1292139, 1483567, 1722852, 2297136, 2584278, 2967134, 3445704, 4450701, 5168556, 5934268, 6891408, 8901402, 10337112, 11868536, 13352103, 17802804, 20674224, 23737072, 26704206, 35605608, 40056309, 53408412, 71211216, 80112618, 106816824, 160225236, 213633648, 320450472, 640900944]

約数ペア:

[(1, 640900944), (2, 320450472), (3, 213633648), (4, 160225236), (6, 106816824), (8, 80112618), (9, 71211216), (12, 53408412), (16, 40056309), (18, 35605608), (24, 26704206), (27, 23737072), (31, 20674224), (36, 17802804), (48, 13352103), (54, 11868536), (62, 10337112), (72, 8901402), (93, 6891408), (108, 5934268), (124, 5168556), (144, 4450701), (186, 3445704), (216, 2967134), (248, 2584278), (279, 2297136), (372, 1722852), (432, 1483567), (496, 1292139), (558, 1148568), (744, 861426), (837, 765712), (1116, 574284), (1488, 430713), (1674, 382856), (2232, 287142), (3348, 191428), (4464, 143571), (6696, 95714), (13392, 47857)]