207781820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{2557}}^1$

素因数の和:2822

約数の個数: 48

約数和(自身を含む): 464123520

約数和(自身を除く): 256341700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 239, 340, 478, 956, 1195, 2390, 2557, 4063, 4780, 5114, 8126, 10228, 12785, 16252, 20315, 25570, 40630, 43469, 51140, 81260, 86938, 173876, 217345, 434690, 611123, 869380, 1222246, 2444492, 3055615, 6111230, 10389091, 12222460, 20778182, 41556364, 51945455, 103890910, 207781820]

約数ペア:

[(1, 207781820), (2, 103890910), (4, 51945455), (5, 41556364), (10, 20778182), (17, 12222460), (20, 10389091), (34, 6111230), (68, 3055615), (85, 2444492), (170, 1222246), (239, 869380), (340, 611123), (478, 434690), (956, 217345), (1195, 173876), (2390, 86938), (2557, 81260), (4063, 51140), (4780, 43469), (5114, 40630), (8126, 25570), (10228, 20315), (12785, 16252)]