21198424

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{643}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 43006320

約数和(自身を除く): 21807896

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 317, 634, 643, 1268, 1286, 2536, 2572, 4121, 5144, 8242, 8359, 16484, 16718, 32968, 33436, 66872, 203831, 407662, 815324, 1630648, 2649803, 5299606, 10599212, 21198424]

約数ペア:

[(1, 21198424), (2, 10599212), (4, 5299606), (8, 2649803), (13, 1630648), (26, 815324), (52, 407662), (104, 203831), (317, 66872), (634, 33436), (643, 32968), (1268, 16718), (1286, 16484), (2536, 8359), (2572, 8242), (4121, 5144)]