6402640

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{491}}^1$

素因数の和:667

約数の個数: 40

約数和(自身を含む): 15007968

約数和(自身を除く): 8605328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 491, 652, 815, 982, 1304, 1630, 1964, 2455, 2608, 3260, 3928, 4910, 6520, 7856, 9820, 13040, 19640, 39280, 80033, 160066, 320132, 400165, 640264, 800330, 1280528, 1600660, 3201320, 6402640]

約数ペア:

[(1, 6402640), (2, 3201320), (4, 1600660), (5, 1280528), (8, 800330), (10, 640264), (16, 400165), (20, 320132), (40, 160066), (80, 80033), (163, 39280), (326, 19640), (491, 13040), (652, 9820), (815, 7856), (982, 6520), (1304, 4910), (1630, 3928), (1964, 3260), (2455, 2608)]