21239608

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{617}}^1$

素因数の和:967

約数の個数: 32

約数和(自身を含む): 43086960

約数和(自身を除く): 21847352

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 331, 617, 662, 1234, 1324, 2468, 2648, 4303, 4936, 8021, 8606, 16042, 17212, 32084, 34424, 64168, 204227, 408454, 816908, 1633816, 2654951, 5309902, 10619804, 21239608]

約数ペア:

[(1, 21239608), (2, 10619804), (4, 5309902), (8, 2654951), (13, 1633816), (26, 816908), (52, 408454), (104, 204227), (331, 64168), (617, 34424), (662, 32084), (1234, 17212), (1324, 16042), (2468, 8606), (2648, 8021), (4303, 4936)]