21070010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2657}}^1$

素因数の和:2738

約数の個数: 32

約数和(自身を含む): 41528592

約数和(自身を除く): 20458582

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2657, 3965, 5314, 7930, 13285, 26570, 34541, 69082, 162077, 172705, 324154, 345410, 810385, 1620770, 2107001, 4214002, 10535005, 21070010]

約数ペア:

[(1, 21070010), (2, 10535005), (5, 4214002), (10, 2107001), (13, 1620770), (26, 810385), (61, 345410), (65, 324154), (122, 172705), (130, 162077), (305, 69082), (610, 34541), (793, 26570), (1586, 13285), (2657, 7930), (3965, 5314)]