64393480

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{7219}}^1$

素因数の和:7453

約数の個数: 32

約数和(自身を含む): 145555200

約数和(自身を除く): 81161720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 7219, 8920, 14438, 28876, 36095, 57752, 72190, 144380, 288760, 1609837, 3219674, 6439348, 8049185, 12878696, 16098370, 32196740, 64393480]

約数ペア:

[(1, 64393480), (2, 32196740), (4, 16098370), (5, 12878696), (8, 8049185), (10, 6439348), (20, 3219674), (40, 1609837), (223, 288760), (446, 144380), (892, 72190), (1115, 57752), (1784, 36095), (2230, 28876), (4460, 14438), (7219, 8920)]