21172112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101789}}^1$

素因数の和:101810

約数の個数: 20

約数和(自身を含む): 44176860

約数和(自身を除く): 23004748

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101789, 203578, 407156, 814312, 1323257, 1628624, 2646514, 5293028, 10586056, 21172112]

約数ペア:

[(1, 21172112), (2, 10586056), (4, 5293028), (8, 2646514), (13, 1628624), (16, 1323257), (26, 814312), (52, 407156), (104, 203578), (208, 101789)]