204561505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1811}}^1$

素因数の和:1905

約数の個数: 32

約数和(自身を含む): 273974400

約数和(自身を除く): 69412895

約数列:

[1, 5, 19, 29, 41, 95, 145, 205, 551, 779, 1189, 1811, 2755, 3895, 5945, 9055, 22591, 34409, 52519, 74251, 112955, 172045, 262595, 371255, 997861, 1410769, 2153279, 4989305, 7053845, 10766395, 40912301, 204561505]

約数ペア:

[(1, 204561505), (5, 40912301), (19, 10766395), (29, 7053845), (41, 4989305), (95, 2153279), (145, 1410769), (205, 997861), (551, 371255), (779, 262595), (1189, 172045), (1811, 112955), (2755, 74251), (3895, 52519), (5945, 34409), (9055, 22591)]