21085460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8713}}^1$

素因数の和:8744

約数の個数: 36

約数和(自身を含む): 48676404

約数和(自身を除く): 27590944

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8713, 17426, 34852, 43565, 87130, 95843, 174260, 191686, 383372, 479215, 958430, 1054273, 1916860, 2108546, 4217092, 5271365, 10542730, 21085460]

約数ペア:

[(1, 21085460), (2, 10542730), (4, 5271365), (5, 4217092), (10, 2108546), (11, 1916860), (20, 1054273), (22, 958430), (44, 479215), (55, 383372), (110, 191686), (121, 174260), (220, 95843), (242, 87130), (484, 43565), (605, 34852), (1210, 17426), (2420, 8713)]