19409440

素因数分解:

$2^5\times 5^1\times {\mathrm{121309}}^1$

素因数の和:121324

約数の個数: 24

約数和(自身を含む): 45855180

約数和(自身を除く): 26445740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 121309, 242618, 485236, 606545, 970472, 1213090, 1940944, 2426180, 3881888, 4852360, 9704720, 19409440]

約数ペア:

[(1, 19409440), (2, 9704720), (4, 4852360), (5, 3881888), (8, 2426180), (10, 1940944), (16, 1213090), (20, 970472), (32, 606545), (40, 485236), (80, 242618), (160, 121309)]