20438805

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13229}}^1$

素因数の和:13340

約数の個数: 16

約数和(自身を含む): 33022080

約数和(自身を除く): 12583275

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13229, 39687, 66145, 198435, 1362587, 4087761, 6812935, 20438805]

約数ペア:

[(1, 20438805), (3, 6812935), (5, 4087761), (15, 1362587), (103, 198435), (309, 66145), (515, 39687), (1545, 13229)]