21781130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{821}}^1$

素因数の和:1214

約数の個数: 32

約数和(自身を含む): 44979840

約数和(自身を除く): 23198710

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 379, 758, 821, 1642, 1895, 2653, 3790, 4105, 5306, 5747, 8210, 11494, 13265, 26530, 28735, 57470, 311159, 622318, 1555795, 2178113, 3111590, 4356226, 10890565, 21781130]

約数ペア:

[(1, 21781130), (2, 10890565), (5, 4356226), (7, 3111590), (10, 2178113), (14, 1555795), (35, 622318), (70, 311159), (379, 57470), (758, 28735), (821, 26530), (1642, 13265), (1895, 11494), (2653, 8210), (3790, 5747), (4105, 5306)]