20804180

素因数分解:

$2^2\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1523}}^1$

素因数の和:2215

約数の個数: 24

約数和(自身を含む): 43781472

約数和(自身を除く): 22977292

約数列:

[1, 2, 4, 5, 10, 20, 683, 1366, 1523, 2732, 3046, 3415, 6092, 6830, 7615, 13660, 15230, 30460, 1040209, 2080418, 4160836, 5201045, 10402090, 20804180]

約数ペア:

[(1, 20804180), (2, 10402090), (4, 5201045), (5, 4160836), (10, 2080418), (20, 1040209), (683, 30460), (1366, 15230), (1523, 13660), (2732, 7615), (3046, 6830), (3415, 6092)]