668812720

素因数分解:

$2^4\times 5^1\times {\mathrm{1637}}^1\times {\mathrm{5107}}^1$

素因数の和:6757

約数の個数: 40

約数和(自身を含む): 1556244144

約数和(自身を除く): 887431424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1637, 3274, 5107, 6548, 8185, 10214, 13096, 16370, 20428, 25535, 26192, 32740, 40856, 51070, 65480, 81712, 102140, 130960, 204280, 408560, 8360159, 16720318, 33440636, 41800795, 66881272, 83601590, 133762544, 167203180, 334406360, 668812720]

約数ペア:

[(1, 668812720), (2, 334406360), (4, 167203180), (5, 133762544), (8, 83601590), (10, 66881272), (16, 41800795), (20, 33440636), (40, 16720318), (80, 8360159), (1637, 408560), (3274, 204280), (5107, 130960), (6548, 102140), (8185, 81712), (10214, 65480), (13096, 51070), (16370, 40856), (20428, 32740), (25535, 26192)]