20237420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4663}}^1$

素因数の和:4710

約数の個数: 48

約数和(自身を含む): 50147328

約数和(自身を除く): 29909908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4663, 9326, 18652, 23315, 32641, 46630, 65282, 93260, 130564, 144553, 163205, 289106, 326410, 578212, 652820, 722765, 1011871, 1445530, 2023742, 2891060, 4047484, 5059355, 10118710, 20237420]

約数ペア:

[(1, 20237420), (2, 10118710), (4, 5059355), (5, 4047484), (7, 2891060), (10, 2023742), (14, 1445530), (20, 1011871), (28, 722765), (31, 652820), (35, 578212), (62, 326410), (70, 289106), (124, 163205), (140, 144553), (155, 130564), (217, 93260), (310, 65282), (434, 46630), (620, 32641), (868, 23315), (1085, 18652), (2170, 9326), (4340, 4663)]