21041410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9521}}^1$

素因数の和:9558

約数の個数: 32

約数和(自身を含む): 43191792

約数和(自身を除く): 22150382

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9521, 19042, 47605, 95210, 123773, 161857, 247546, 323714, 618865, 809285, 1237730, 1618570, 2104141, 4208282, 10520705, 21041410]

約数ペア:

[(1, 21041410), (2, 10520705), (5, 4208282), (10, 2104141), (13, 1618570), (17, 1237730), (26, 809285), (34, 618865), (65, 323714), (85, 247546), (130, 161857), (170, 123773), (221, 95210), (442, 47605), (1105, 19042), (2210, 9521)]