19617904

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{8821}}^1$

素因数の和:8968

約数の個数: 20

約数和(自身を含む): 38287480

約数和(自身を除く): 18669576

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 8821, 17642, 35284, 70568, 141136, 1226119, 2452238, 4904476, 9808952, 19617904]

約数ペア:

[(1, 19617904), (2, 9808952), (4, 4904476), (8, 2452238), (16, 1226119), (139, 141136), (278, 70568), (556, 35284), (1112, 17642), (2224, 8821)]