21461560

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{953}}^1$

素因数の和:1527

約数の個数: 32

約数和(自身を含む): 48425040

約数和(自身を除く): 26963480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 953, 1126, 1906, 2252, 2815, 3812, 4504, 4765, 5630, 7624, 9530, 11260, 19060, 22520, 38120, 536539, 1073078, 2146156, 2682695, 4292312, 5365390, 10730780, 21461560]

約数ペア:

[(1, 21461560), (2, 10730780), (4, 5365390), (5, 4292312), (8, 2682695), (10, 2146156), (20, 1073078), (40, 536539), (563, 38120), (953, 22520), (1126, 19060), (1906, 11260), (2252, 9530), (2815, 7624), (3812, 5630), (4504, 4765)]