278960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{317}}^1$

素因数の和:341

約数の個数: 40

約数和(自身を含む): 709776

約数和(自身を除く): 430816

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 317, 440, 634, 880, 1268, 1585, 2536, 3170, 3487, 5072, 6340, 6974, 12680, 13948, 17435, 25360, 27896, 34870, 55792, 69740, 139480, 278960]

約数ペア:

[(1, 278960), (2, 139480), (4, 69740), (5, 55792), (8, 34870), (10, 27896), (11, 25360), (16, 17435), (20, 13948), (22, 12680), (40, 6974), (44, 6340), (55, 5072), (80, 3487), (88, 3170), (110, 2536), (176, 1585), (220, 1268), (317, 880), (440, 634)]