19662040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3299}}^1$

素因数の和:3459

約数の個数: 32

約数和(自身を含む): 44550000

約数和(自身を除く): 24887960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3299, 5960, 6598, 13196, 16495, 26392, 32990, 65980, 131960, 491551, 983102, 1966204, 2457755, 3932408, 4915510, 9831020, 19662040]

約数ペア:

[(1, 19662040), (2, 9831020), (4, 4915510), (5, 3932408), (8, 2457755), (10, 1966204), (20, 983102), (40, 491551), (149, 131960), (298, 65980), (596, 32990), (745, 26392), (1192, 16495), (1490, 13196), (2980, 6598), (3299, 5960)]