21057270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53993}}^1$

素因数の和:54016

約数の個数: 32

約数和(自身を含む): 54425952

約数和(自身を除く): 33368682

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53993, 107986, 161979, 269965, 323958, 539930, 701909, 809895, 1403818, 1619790, 2105727, 3509545, 4211454, 7019090, 10528635, 21057270]

約数ペア:

[(1, 21057270), (2, 10528635), (3, 7019090), (5, 4211454), (6, 3509545), (10, 2105727), (13, 1619790), (15, 1403818), (26, 809895), (30, 701909), (39, 539930), (65, 323958), (78, 269965), (130, 161979), (195, 107986), (390, 53993)]