21432476

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1\times {\mathrm{643}}^1$

素因数の和:1301

約数の個数: 24

約数和(自身を含む): 40517904

約数和(自身を除く): 19085428

約数列:

[1, 2, 4, 13, 26, 52, 641, 643, 1282, 1286, 2564, 2572, 8333, 8359, 16666, 16718, 33332, 33436, 412163, 824326, 1648652, 5358119, 10716238, 21432476]

約数ペア:

[(1, 21432476), (2, 10716238), (4, 5358119), (13, 1648652), (26, 824326), (52, 412163), (641, 33436), (643, 33332), (1282, 16718), (1286, 16666), (2564, 8359), (2572, 8333)]