21551145500

素因数分解:

$2^2\times 5^3\times {\mathrm{313}}^1\times {\mathrm{137707}}^1$

素因数の和:138039

約数の個数: 48

約数和(自身を含む): 47218420704

約数和(自身を除く): 25667275204

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 313, 500, 626, 1252, 1565, 3130, 6260, 7825, 15650, 31300, 39125, 78250, 137707, 156500, 275414, 550828, 688535, 1377070, 2754140, 3442675, 6885350, 13770700, 17213375, 34426750, 43102291, 68853500, 86204582, 172409164, 215511455, 431022910, 862045820, 1077557275, 2155114550, 4310229100, 5387786375, 10775572750, 21551145500]

約数ペア:

[(1, 21551145500), (2, 10775572750), (4, 5387786375), (5, 4310229100), (10, 2155114550), (20, 1077557275), (25, 862045820), (50, 431022910), (100, 215511455), (125, 172409164), (250, 86204582), (313, 68853500), (500, 43102291), (626, 34426750), (1252, 17213375), (1565, 13770700), (3130, 6885350), (6260, 3442675), (7825, 2754140), (15650, 1377070), (31300, 688535), (39125, 550828), (78250, 275414), (137707, 156500)]