21160760

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{863}}^1$

素因数の和:1487

約数の個数: 32

約数和(自身を含む): 47744640

約数和(自身を除く): 26583880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 863, 1226, 1726, 2452, 3065, 3452, 4315, 4904, 6130, 6904, 8630, 12260, 17260, 24520, 34520, 529019, 1058038, 2116076, 2645095, 4232152, 5290190, 10580380, 21160760]

約数ペア:

[(1, 21160760), (2, 10580380), (4, 5290190), (5, 4232152), (8, 2645095), (10, 2116076), (20, 1058038), (40, 529019), (613, 34520), (863, 24520), (1226, 17260), (1726, 12260), (2452, 8630), (3065, 6904), (3452, 6130), (4315, 4904)]