21109432

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 40550400

約数和(自身を除く): 19440968

約数列:

[1, 2, 4, 8, 79, 127, 158, 254, 263, 316, 508, 526, 632, 1016, 1052, 2104, 10033, 20066, 20777, 33401, 40132, 41554, 66802, 80264, 83108, 133604, 166216, 267208, 2638679, 5277358, 10554716, 21109432]

約数ペア:

[(1, 21109432), (2, 10554716), (4, 5277358), (8, 2638679), (79, 267208), (127, 166216), (158, 133604), (254, 83108), (263, 80264), (316, 66802), (508, 41554), (526, 40132), (632, 33401), (1016, 20777), (1052, 20066), (2104, 10033)]