21278747204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2188271}}^1$

素因数の和:2188316

約数の個数: 48

約数和(自身を含む): 46321341696

約数和(自身を除く): 25042594492

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 44, 52, 68, 143, 187, 221, 286, 374, 442, 572, 748, 884, 2431, 4862, 9724, 2188271, 4376542, 8753084, 24070981, 28447523, 37200607, 48141962, 56895046, 74401214, 96283924, 113790092, 148802428, 312922753, 409206677, 483607891, 625845506, 818413354, 967215782, 1251691012, 1636826708, 1934431564, 5319686801, 10639373602, 21278747204]

約数ペア:

[(1, 21278747204), (2, 10639373602), (4, 5319686801), (11, 1934431564), (13, 1636826708), (17, 1251691012), (22, 967215782), (26, 818413354), (34, 625845506), (44, 483607891), (52, 409206677), (68, 312922753), (143, 148802428), (187, 113790092), (221, 96283924), (286, 74401214), (374, 56895046), (442, 48141962), (572, 37200607), (748, 28447523), (884, 24070981), (2431, 8753084), (4862, 4376542), (9724, 2188271)]