256360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:70

約数の個数: 64

約数和(自身を含む): 680400

約数和(自身を除く): 424040

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 29, 34, 40, 52, 58, 65, 68, 85, 104, 116, 130, 136, 145, 170, 221, 232, 260, 290, 340, 377, 442, 493, 520, 580, 680, 754, 884, 986, 1105, 1160, 1508, 1768, 1885, 1972, 2210, 2465, 3016, 3770, 3944, 4420, 4930, 6409, 7540, 8840, 9860, 12818, 15080, 19720, 25636, 32045, 51272, 64090, 128180, 256360]

約数ペア:

[(1, 256360), (2, 128180), (4, 64090), (5, 51272), (8, 32045), (10, 25636), (13, 19720), (17, 15080), (20, 12818), (26, 9860), (29, 8840), (34, 7540), (40, 6409), (52, 4930), (58, 4420), (65, 3944), (68, 3770), (85, 3016), (104, 2465), (116, 2210), (130, 1972), (136, 1885), (145, 1768), (170, 1508), (221, 1160), (232, 1105), (260, 986), (290, 884), (340, 754), (377, 680), (442, 580), (493, 520)]