399105260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61781}}^1$

素因数の和:61826

約数の個数: 48

約数和(自身を含む): 934143840

約数和(自身を除く): 535038580

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 61781, 123562, 247124, 308905, 617810, 1050277, 1173839, 1235620, 2100554, 2347678, 4201108, 4695356, 5251385, 5869195, 10502770, 11738390, 19955263, 21005540, 23476780, 39910526, 79821052, 99776315, 199552630, 399105260]

約数ペア:

[(1, 399105260), (2, 199552630), (4, 99776315), (5, 79821052), (10, 39910526), (17, 23476780), (19, 21005540), (20, 19955263), (34, 11738390), (38, 10502770), (68, 5869195), (76, 5251385), (85, 4695356), (95, 4201108), (170, 2347678), (190, 2100554), (323, 1235620), (340, 1173839), (380, 1050277), (646, 617810), (1292, 308905), (1615, 247124), (3230, 123562), (6460, 61781)]