1557640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{5563}}^1$

素因数の和:5581

約数の個数: 32

約数和(自身を含む): 4006080

約数和(自身を除く): 2448440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 5563, 11126, 22252, 27815, 38941, 44504, 55630, 77882, 111260, 155764, 194705, 222520, 311528, 389410, 778820, 1557640]

約数ペア:

[(1, 1557640), (2, 778820), (4, 389410), (5, 311528), (7, 222520), (8, 194705), (10, 155764), (14, 111260), (20, 77882), (28, 55630), (35, 44504), (40, 38941), (56, 27815), (70, 22252), (140, 11126), (280, 5563)]