21507746

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 14489950

約数列:

[1, 2, 13, 26, 61, 71, 122, 142, 191, 382, 793, 923, 1586, 1846, 2483, 4331, 4966, 8662, 11651, 13561, 23302, 27122, 56303, 112606, 151463, 176293, 302926, 352586, 827221, 1654442, 10753873, 21507746]

約数ペア:

[(1, 21507746), (2, 10753873), (13, 1654442), (26, 827221), (61, 352586), (71, 302926), (122, 176293), (142, 151463), (191, 112606), (382, 56303), (793, 27122), (923, 23302), (1586, 13561), (1846, 11651), (2483, 8662), (4331, 4966)]