18881902

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{16889}}^1$

素因数の和:16947

約数の個数: 16

約数和(自身を含む): 31212720

約数和(自身を除く): 12330818

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 16889, 33778, 219557, 439114, 726227, 1452454, 9440951, 18881902]

約数ペア:

[(1, 18881902), (2, 9440951), (13, 1452454), (26, 726227), (43, 439114), (86, 219557), (559, 33778), (1118, 16889)]