396912985

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{20507}}^1$

素因数の和:20605

約数の個数: 24

約数和(自身を含む): 561098880

約数和(自身を除く): 164185895

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 2765, 3871, 19355, 20507, 102535, 143549, 717745, 1004843, 1620053, 5024215, 8100265, 11340371, 56701855, 79382597, 396912985]

約数ペア:

[(1, 396912985), (5, 79382597), (7, 56701855), (35, 11340371), (49, 8100265), (79, 5024215), (245, 1620053), (395, 1004843), (553, 717745), (2765, 143549), (3871, 102535), (19355, 20507)]