77426920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 178848000

約数和(自身を除く): 101421080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 137, 142, 199, 274, 284, 355, 398, 548, 568, 685, 710, 796, 995, 1096, 1370, 1420, 1592, 1990, 2740, 2840, 3980, 5480, 7960, 9727, 14129, 19454, 27263, 28258, 38908, 48635, 54526, 56516, 70645, 77816, 97270, 109052, 113032, 136315, 141290, 194540, 218104, 272630, 282580, 389080, 545260, 565160, 1090520, 1935673, 3871346, 7742692, 9678365, 15485384, 19356730, 38713460, 77426920]

約数ペア:

[(1, 77426920), (2, 38713460), (4, 19356730), (5, 15485384), (8, 9678365), (10, 7742692), (20, 3871346), (40, 1935673), (71, 1090520), (137, 565160), (142, 545260), (199, 389080), (274, 282580), (284, 272630), (355, 218104), (398, 194540), (548, 141290), (568, 136315), (685, 113032), (710, 109052), (796, 97270), (995, 77816), (1096, 70645), (1370, 56516), (1420, 54526), (1592, 48635), (1990, 38908), (2740, 28258), (2840, 27263), (3980, 19454), (5480, 14129), (7960, 9727)]