402920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1439}}^1$

素因数の和:1457

約数の個数: 32

約数和(自身を含む): 1036800

約数和(自身を除く): 633880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1439, 2878, 5756, 7195, 10073, 11512, 14390, 20146, 28780, 40292, 50365, 57560, 80584, 100730, 201460, 402920]

約数ペア:

[(1, 402920), (2, 201460), (4, 100730), (5, 80584), (7, 57560), (8, 50365), (10, 40292), (14, 28780), (20, 20146), (28, 14390), (35, 11512), (40, 10073), (56, 7195), (70, 5756), (140, 2878), (280, 1439)]