21739510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3889}}^1$

素因数の和:3952

約数の個数: 32

約数和(自身を含む): 43132320

約数和(自身を除く): 21392810

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3889, 5590, 7778, 19445, 38890, 50557, 101114, 167227, 252785, 334454, 505570, 836135, 1672270, 2173951, 4347902, 10869755, 21739510]

約数ペア:

[(1, 21739510), (2, 10869755), (5, 4347902), (10, 2173951), (13, 1672270), (26, 836135), (43, 505570), (65, 334454), (86, 252785), (130, 167227), (215, 101114), (430, 50557), (559, 38890), (1118, 19445), (2795, 7778), (3889, 5590)]