20347431

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{599}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 29865600

約数和(自身を除く): 9518169

約数列:

[1, 3, 13, 39, 67, 169, 201, 507, 599, 871, 1797, 2613, 7787, 11323, 23361, 33969, 40133, 101231, 120399, 303693, 521729, 1565187, 6782477, 20347431]

約数ペア:

[(1, 20347431), (3, 6782477), (13, 1565187), (39, 521729), (67, 303693), (169, 120399), (201, 101231), (507, 40133), (599, 33969), (871, 23361), (1797, 11323), (2613, 7787)]