21000742570

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{3313}}^1\times {\mathrm{13487}}^1$

素因数の和:16854

約数の個数: 32

約数和(自身を含む): 38620136448

約数和(自身を除く): 17619393878

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 3313, 6626, 13487, 16565, 26974, 33130, 67435, 134870, 155711, 311422, 633889, 778555, 1267778, 1557110, 3169445, 6338890, 44682431, 89364862, 223412155, 446824310, 2100074257, 4200148514, 10500371285, 21000742570]

約数ペア:

[(1, 21000742570), (2, 10500371285), (5, 4200148514), (10, 2100074257), (47, 446824310), (94, 223412155), (235, 89364862), (470, 44682431), (3313, 6338890), (6626, 3169445), (13487, 1557110), (16565, 1267778), (26974, 778555), (33130, 633889), (67435, 311422), (134870, 155711)]