77871980

素因数分解:

$2^2\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{3821}}^1$

素因数の和:4849

約数の個数: 24

約数和(自身を含む): 163734480

約数和(自身を除く): 85862500

約数列:

[1, 2, 4, 5, 10, 20, 1019, 2038, 3821, 4076, 5095, 7642, 10190, 15284, 19105, 20380, 38210, 76420, 3893599, 7787198, 15574396, 19467995, 38935990, 77871980]

約数ペア:

[(1, 77871980), (2, 38935990), (4, 19467995), (5, 15574396), (10, 7787198), (20, 3893599), (1019, 76420), (2038, 38210), (3821, 20380), (4076, 19105), (5095, 15284), (7642, 10190)]