400010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:218

約数の個数: 32

約数和(自身を含む): 825552

約数和(自身を除く): 425542

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 181, 221, 362, 442, 905, 1105, 1810, 2210, 2353, 3077, 4706, 6154, 11765, 15385, 23530, 30770, 40001, 80002, 200005, 400010]

約数ペア:

[(1, 400010), (2, 200005), (5, 80002), (10, 40001), (13, 30770), (17, 23530), (26, 15385), (34, 11765), (65, 6154), (85, 4706), (130, 3077), (170, 2353), (181, 2210), (221, 1810), (362, 1105), (442, 905)]