21005772

素因数分解:

$2^2\times 3^1\times {\mathrm{523}}^1\times {\mathrm{3347}}^1$

素因数の和:3877

約数の個数: 24

約数和(自身を含む): 49121856

約数和(自身を除く): 28116084

約数列:

[1, 2, 3, 4, 6, 12, 523, 1046, 1569, 2092, 3138, 3347, 6276, 6694, 10041, 13388, 20082, 40164, 1750481, 3500962, 5251443, 7001924, 10502886, 21005772]

約数ペア:

[(1, 21005772), (2, 10502886), (3, 7001924), (4, 5251443), (6, 3500962), (12, 1750481), (523, 40164), (1046, 20082), (1569, 13388), (2092, 10041), (3138, 6694), (3347, 6276)]