8390920

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2357}}^1$

素因数の和:2457

約数の個数: 32

約数和(自身を含む): 19099800

約数和(自身を除く): 10708880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2357, 3560, 4714, 9428, 11785, 18856, 23570, 47140, 94280, 209773, 419546, 839092, 1048865, 1678184, 2097730, 4195460, 8390920]

約数ペア:

[(1, 8390920), (2, 4195460), (4, 2097730), (5, 1678184), (8, 1048865), (10, 839092), (20, 419546), (40, 209773), (89, 94280), (178, 47140), (356, 23570), (445, 18856), (712, 11785), (890, 9428), (1780, 4714), (2357, 3560)]