21819005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{3259}}^1$

素因数の和:3380

約数の個数: 16

約数和(自身を含む): 28479360

約数和(自身を除く): 6660355

約数列:

[1, 5, 13, 65, 103, 515, 1339, 3259, 6695, 16295, 42367, 211835, 335677, 1678385, 4363801, 21819005]

約数ペア:

[(1, 21819005), (5, 4363801), (13, 1678385), (65, 335677), (103, 211835), (515, 42367), (1339, 16295), (3259, 6695)]