1026640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:367

約数の個数: 40

約数和(自身を含む): 2452968

約数和(自身を除く): 1426328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 313, 328, 410, 626, 656, 820, 1252, 1565, 1640, 2504, 3130, 3280, 5008, 6260, 12520, 12833, 25040, 25666, 51332, 64165, 102664, 128330, 205328, 256660, 513320, 1026640]

約数ペア:

[(1, 1026640), (2, 513320), (4, 256660), (5, 205328), (8, 128330), (10, 102664), (16, 64165), (20, 51332), (40, 25666), (41, 25040), (80, 12833), (82, 12520), (164, 6260), (205, 5008), (313, 3280), (328, 3130), (410, 2504), (626, 1640), (656, 1565), (820, 1252)]