21563386

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{487}}^1$

素因数の和:646

約数の個数: 24

約数和(自身を含む): 35364384

約数和(自身を除く): 13800998

約数列:

[1, 2, 13, 26, 131, 169, 262, 338, 487, 974, 1703, 3406, 6331, 12662, 22139, 44278, 63797, 82303, 127594, 164606, 829361, 1658722, 10781693, 21563386]

約数ペア:

[(1, 21563386), (2, 10781693), (13, 1658722), (26, 829361), (131, 164606), (169, 127594), (262, 82303), (338, 63797), (487, 44278), (974, 22139), (1703, 12662), (3406, 6331)]