25281680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4451}}^1$

素因数の和:4535

約数の個数: 40

約数和(自身を含む): 59621184

約数和(自身を除く): 34339504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4451, 5680, 8902, 17804, 22255, 35608, 44510, 71216, 89020, 178040, 316021, 356080, 632042, 1264084, 1580105, 2528168, 3160210, 5056336, 6320420, 12640840, 25281680]

約数ペア:

[(1, 25281680), (2, 12640840), (4, 6320420), (5, 5056336), (8, 3160210), (10, 2528168), (16, 1580105), (20, 1264084), (40, 632042), (71, 356080), (80, 316021), (142, 178040), (284, 89020), (355, 71216), (568, 44510), (710, 35608), (1136, 22255), (1420, 17804), (2840, 8902), (4451, 5680)]