20821030

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1181}}^1$

素因数の和:1272

約数の個数: 32

約数和(自身を含む): 39318048

約数和(自身を除く): 18497018

約数列:

[1, 2, 5, 10, 41, 43, 82, 86, 205, 215, 410, 430, 1181, 1763, 2362, 3526, 5905, 8815, 11810, 17630, 48421, 50783, 96842, 101566, 242105, 253915, 484210, 507830, 2082103, 4164206, 10410515, 20821030]

約数ペア:

[(1, 20821030), (2, 10410515), (5, 4164206), (10, 2082103), (41, 507830), (43, 484210), (82, 253915), (86, 242105), (205, 101566), (215, 96842), (410, 50783), (430, 48421), (1181, 17630), (1763, 11810), (2362, 8815), (3526, 5905)]