40385980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{389}}^1$

素因数の和:606

約数の個数: 48

約数和(自身を含む): 88452000

約数和(自身を除く): 48066020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 179, 290, 358, 389, 580, 716, 778, 895, 1556, 1790, 1945, 3580, 3890, 5191, 7780, 10382, 11281, 20764, 22562, 25955, 45124, 51910, 56405, 69631, 103820, 112810, 139262, 225620, 278524, 348155, 696310, 1392620, 2019299, 4038598, 8077196, 10096495, 20192990, 40385980]

約数ペア:

[(1, 40385980), (2, 20192990), (4, 10096495), (5, 8077196), (10, 4038598), (20, 2019299), (29, 1392620), (58, 696310), (116, 348155), (145, 278524), (179, 225620), (290, 139262), (358, 112810), (389, 103820), (580, 69631), (716, 56405), (778, 51910), (895, 45124), (1556, 25955), (1790, 22562), (1945, 20764), (3580, 11281), (3890, 10382), (5191, 7780)]