28644460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{131}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 67603536

約数和(自身を除く): 38959076

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 131, 145, 260, 262, 290, 377, 524, 580, 655, 754, 841, 1310, 1508, 1682, 1703, 1885, 2620, 3364, 3406, 3770, 3799, 4205, 6812, 7540, 7598, 8410, 8515, 10933, 15196, 16820, 17030, 18995, 21866, 34060, 37990, 43732, 49387, 54665, 75980, 98774, 109330, 110171, 197548, 218660, 220342, 246935, 440684, 493870, 550855, 987740, 1101710, 1432223, 2203420, 2864446, 5728892, 7161115, 14322230, 28644460]

約数ペア:

[(1, 28644460), (2, 14322230), (4, 7161115), (5, 5728892), (10, 2864446), (13, 2203420), (20, 1432223), (26, 1101710), (29, 987740), (52, 550855), (58, 493870), (65, 440684), (116, 246935), (130, 220342), (131, 218660), (145, 197548), (260, 110171), (262, 109330), (290, 98774), (377, 75980), (524, 54665), (580, 49387), (655, 43732), (754, 37990), (841, 34060), (1310, 21866), (1508, 18995), (1682, 17030), (1703, 16820), (1885, 15196), (2620, 10933), (3364, 8515), (3406, 8410), (3770, 7598), (3799, 7540), (4205, 6812)]