12978375

素因数分解:

$3^1\times 5^3\times {\mathrm{53}}^1\times {\mathrm{653}}^1$

素因数の和:724

約数の個数: 32

約数和(自身を含む): 22037184

約数和(自身を除く): 9058809

約数列:

[1, 3, 5, 15, 25, 53, 75, 125, 159, 265, 375, 653, 795, 1325, 1959, 3265, 3975, 6625, 9795, 16325, 19875, 34609, 48975, 81625, 103827, 173045, 244875, 519135, 865225, 2595675, 4326125, 12978375]

約数ペア:

[(1, 12978375), (3, 4326125), (5, 2595675), (15, 865225), (25, 519135), (53, 244875), (75, 173045), (125, 103827), (159, 81625), (265, 48975), (375, 34609), (653, 19875), (795, 16325), (1325, 9795), (1959, 6625), (3265, 3975)]