638387646

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{47309}}^1$

素因数の和:47500

約数の個数: 32

約数和(自身を含む): 1382965920

約数和(自身を除く): 744578274

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 173, 346, 519, 1038, 2249, 4498, 6747, 13494, 47309, 94618, 141927, 283854, 615017, 1230034, 1845051, 3690102, 8184457, 16368914, 24553371, 49106742, 106397941, 212795882, 319193823, 638387646]

約数ペア:

[(1, 638387646), (2, 319193823), (3, 212795882), (6, 106397941), (13, 49106742), (26, 24553371), (39, 16368914), (78, 8184457), (173, 3690102), (346, 1845051), (519, 1230034), (1038, 615017), (2249, 283854), (4498, 141927), (6747, 94618), (13494, 47309)]