181122020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{4481}}^1$

素因数の和:4580

約数の個数: 48

約数和(自身を含む): 397571328

約数和(自身を除く): 216449308

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 2021, 4042, 4481, 8084, 8962, 10105, 17924, 20210, 22405, 40420, 44810, 89620, 192683, 210607, 385366, 421214, 770732, 842428, 963415, 1053035, 1926830, 2106070, 3853660, 4212140, 9056101, 18112202, 36224404, 45280505, 90561010, 181122020]

約数ペア:

[(1, 181122020), (2, 90561010), (4, 45280505), (5, 36224404), (10, 18112202), (20, 9056101), (43, 4212140), (47, 3853660), (86, 2106070), (94, 1926830), (172, 1053035), (188, 963415), (215, 842428), (235, 770732), (430, 421214), (470, 385366), (860, 210607), (940, 192683), (2021, 89620), (4042, 44810), (4481, 40420), (8084, 22405), (8962, 20210), (10105, 17924)]