261988116

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{31687}}^1$

素因数の和:31760

約数の個数: 48

約数和(自身を含む): 670771584

約数和(自身を除く): 408783468

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 53, 78, 106, 156, 159, 212, 318, 636, 689, 1378, 2067, 2756, 4134, 8268, 31687, 63374, 95061, 126748, 190122, 380244, 411931, 823862, 1235793, 1647724, 1679411, 2471586, 3358822, 4943172, 5038233, 6717644, 10076466, 20152932, 21832343, 43664686, 65497029, 87329372, 130994058, 261988116]

約数ペア:

[(1, 261988116), (2, 130994058), (3, 87329372), (4, 65497029), (6, 43664686), (12, 21832343), (13, 20152932), (26, 10076466), (39, 6717644), (52, 5038233), (53, 4943172), (78, 3358822), (106, 2471586), (156, 1679411), (159, 1647724), (212, 1235793), (318, 823862), (636, 411931), (689, 380244), (1378, 190122), (2067, 126748), (2756, 95061), (4134, 63374), (8268, 31687)]