21435544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2609}}^1$

素因数の和:2707

約数の個数: 32

約数和(自身を含む): 43848000

約数和(自身を除く): 22412456

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2609, 4108, 5218, 8216, 10436, 20872, 33917, 67834, 135668, 206111, 271336, 412222, 824444, 1648888, 2679443, 5358886, 10717772, 21435544]

約数ペア:

[(1, 21435544), (2, 10717772), (4, 5358886), (8, 2679443), (13, 1648888), (26, 824444), (52, 412222), (79, 271336), (104, 206111), (158, 135668), (316, 67834), (632, 33917), (1027, 20872), (2054, 10436), (2609, 8216), (4108, 5218)]