19958428

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8009}}^1$

素因数の和:8109

約数の個数: 24

約数和(自身を含む): 40370400

約数和(自身を除く): 20411972

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8009, 16018, 32036, 56063, 112126, 224252, 712801, 1425602, 2851204, 4989607, 9979214, 19958428]

約数ペア:

[(1, 19958428), (2, 9979214), (4, 4989607), (7, 2851204), (14, 1425602), (28, 712801), (89, 224252), (178, 112126), (356, 56063), (623, 32036), (1246, 16018), (2492, 8009)]