21346340

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17497}}^1$

素因数の和:17567

約数の個数: 24

約数和(自身を含む): 45564792

約数和(自身を除く): 24218452

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17497, 34994, 69988, 87485, 174970, 349940, 1067317, 2134634, 4269268, 5336585, 10673170, 21346340]

約数ペア:

[(1, 21346340), (2, 10673170), (4, 5336585), (5, 4269268), (10, 2134634), (20, 1067317), (61, 349940), (122, 174970), (244, 87485), (305, 69988), (610, 34994), (1220, 17497)]