21168989200

素因数分解:

$2^4\times 5^2\times {\mathrm{1289}}^1\times {\mathrm{41057}}^1$

素因数の和:42364

約数の個数: 60

約数和(自身を含む): 50899192020

約数和(自身を除く): 29730202820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1289, 2578, 5156, 6445, 10312, 12890, 20624, 25780, 32225, 41057, 51560, 64450, 82114, 103120, 128900, 164228, 205285, 257800, 328456, 410570, 515600, 656912, 821140, 1026425, 1642280, 2052850, 3284560, 4105700, 8211400, 16422800, 52922473, 105844946, 211689892, 264612365, 423379784, 529224730, 846759568, 1058449460, 1323061825, 2116898920, 2646123650, 4233797840, 5292247300, 10584494600, 21168989200]

約数ペア:

[(1, 21168989200), (2, 10584494600), (4, 5292247300), (5, 4233797840), (8, 2646123650), (10, 2116898920), (16, 1323061825), (20, 1058449460), (25, 846759568), (40, 529224730), (50, 423379784), (80, 264612365), (100, 211689892), (200, 105844946), (400, 52922473), (1289, 16422800), (2578, 8211400), (5156, 4105700), (6445, 3284560), (10312, 2052850), (12890, 1642280), (20624, 1026425), (25780, 821140), (32225, 656912), (41057, 515600), (51560, 410570), (64450, 328456), (82114, 257800), (103120, 205285), (128900, 164228)]