88890020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{461}}^1$

素因数の和:812

約数の個数: 48

約数和(自身を含む): 193729536

約数和(自身を除く): 104839516

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 311, 461, 620, 622, 922, 1244, 1555, 1844, 2305, 3110, 4610, 6220, 9220, 9641, 14291, 19282, 28582, 38564, 48205, 57164, 71455, 96410, 142910, 143371, 192820, 285820, 286742, 573484, 716855, 1433710, 2867420, 4444501, 8889002, 17778004, 22222505, 44445010, 88890020]

約数ペア:

[(1, 88890020), (2, 44445010), (4, 22222505), (5, 17778004), (10, 8889002), (20, 4444501), (31, 2867420), (62, 1433710), (124, 716855), (155, 573484), (310, 286742), (311, 285820), (461, 192820), (620, 143371), (622, 142910), (922, 96410), (1244, 71455), (1555, 57164), (1844, 48205), (2305, 38564), (3110, 28582), (4610, 19282), (6220, 14291), (9220, 9641)]