20452900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15733}}^1$

素因数の和:15760

約数の個数: 36

約数和(自身を含む): 47799892

約数和(自身を除く): 27346992

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15733, 31466, 62932, 78665, 157330, 204529, 314660, 393325, 409058, 786650, 818116, 1022645, 1573300, 2045290, 4090580, 5113225, 10226450, 20452900]

約数ペア:

[(1, 20452900), (2, 10226450), (4, 5113225), (5, 4090580), (10, 2045290), (13, 1573300), (20, 1022645), (25, 818116), (26, 786650), (50, 409058), (52, 393325), (65, 314660), (100, 204529), (130, 157330), (260, 78665), (325, 62932), (650, 31466), (1300, 15733)]