251220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 725760

約数和(自身を除く): 474540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 79, 106, 158, 159, 212, 237, 265, 316, 318, 395, 474, 530, 636, 790, 795, 948, 1060, 1185, 1580, 1590, 2370, 3180, 4187, 4740, 8374, 12561, 16748, 20935, 25122, 41870, 50244, 62805, 83740, 125610, 251220]

約数ペア:

[(1, 251220), (2, 125610), (3, 83740), (4, 62805), (5, 50244), (6, 41870), (10, 25122), (12, 20935), (15, 16748), (20, 12561), (30, 8374), (53, 4740), (60, 4187), (79, 3180), (106, 2370), (158, 1590), (159, 1580), (212, 1185), (237, 1060), (265, 948), (316, 795), (318, 790), (395, 636), (474, 530)]