21353930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{593}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 41613264

約数和(自身を除く): 20259334

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 277, 554, 593, 1186, 1385, 2770, 2965, 3601, 5930, 7202, 7709, 15418, 18005, 36010, 38545, 77090, 164261, 328522, 821305, 1642610, 2135393, 4270786, 10676965, 21353930]

約数ペア:

[(1, 21353930), (2, 10676965), (5, 4270786), (10, 2135393), (13, 1642610), (26, 821305), (65, 328522), (130, 164261), (277, 77090), (554, 38545), (593, 36010), (1186, 18005), (1385, 15418), (2770, 7709), (2965, 7202), (3601, 5930)]