80426920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{287239}}^1$

素因数の和:287257

約数の個数: 32

約数和(自身を含む): 206812800

約数和(自身を除く): 126385880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 287239, 574478, 1148956, 1436195, 2010673, 2297912, 2872390, 4021346, 5744780, 8042692, 10053365, 11489560, 16085384, 20106730, 40213460, 80426920]

約数ペア:

[(1, 80426920), (2, 40213460), (4, 20106730), (5, 16085384), (7, 11489560), (8, 10053365), (10, 8042692), (14, 5744780), (20, 4021346), (28, 2872390), (35, 2297912), (40, 2010673), (56, 1436195), (70, 1148956), (140, 574478), (280, 287239)]