21912956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7951}}^1$

素因数の和:8021

約数の個数: 24

約数和(自身を含む): 42081984

約数和(自身を除く): 20169028

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7951, 15902, 31804, 103363, 206726, 413452, 421403, 842806, 1685612, 5478239, 10956478, 21912956]

約数ペア:

[(1, 21912956), (2, 10956478), (4, 5478239), (13, 1685612), (26, 842806), (52, 421403), (53, 413452), (106, 206726), (212, 103363), (689, 31804), (1378, 15902), (2756, 7951)]