397388540

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{196727}}^1$

素因数の和:196837

約数の個数: 24

約数和(自身を含む): 842782752

約数和(自身を除く): 445394212

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 196727, 393454, 786908, 983635, 1967270, 3934540, 19869427, 39738854, 79477708, 99347135, 198694270, 397388540]

約数ペア:

[(1, 397388540), (2, 198694270), (4, 99347135), (5, 79477708), (10, 39738854), (20, 19869427), (101, 3934540), (202, 1967270), (404, 983635), (505, 786908), (1010, 393454), (2020, 196727)]