20563540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1951}}^1$

素因数の和:2008

約数の個数: 48

約数和(自身を含む): 47222784

約数和(自身を除く): 26659244

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 1951, 2108, 2635, 3902, 5270, 7804, 9755, 10540, 19510, 33167, 39020, 60481, 66334, 120962, 132668, 165835, 241924, 302405, 331670, 604810, 663340, 1028177, 1209620, 2056354, 4112708, 5140885, 10281770, 20563540]

約数ペア:

[(1, 20563540), (2, 10281770), (4, 5140885), (5, 4112708), (10, 2056354), (17, 1209620), (20, 1028177), (31, 663340), (34, 604810), (62, 331670), (68, 302405), (85, 241924), (124, 165835), (155, 132668), (170, 120962), (310, 66334), (340, 60481), (527, 39020), (620, 33167), (1054, 19510), (1951, 10540), (2108, 9755), (2635, 7804), (3902, 5270)]