21718736

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104417}}^1$

素因数の和:104438

約数の個数: 20

約数和(自身を含む): 45317412

約数和(自身を除く): 23598676

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104417, 208834, 417668, 835336, 1357421, 1670672, 2714842, 5429684, 10859368, 21718736]

約数ペア:

[(1, 21718736), (2, 10859368), (4, 5429684), (8, 2714842), (13, 1670672), (16, 1357421), (26, 835336), (52, 417668), (104, 208834), (208, 104417)]