19469980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15959}}^1$

素因数の和:16029

約数の個数: 24

約数和(自身を含む): 41559840

約数和(自身を除く): 22089860

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15959, 31918, 63836, 79795, 159590, 319180, 973499, 1946998, 3893996, 4867495, 9734990, 19469980]

約数ペア:

[(1, 19469980), (2, 9734990), (4, 4867495), (5, 3893996), (10, 1946998), (20, 973499), (61, 319180), (122, 159590), (244, 79795), (305, 63836), (610, 31918), (1220, 15959)]