2020408515

素因数分解:

$3^4\times 5^1\times {\mathrm{4988663}}^1$

素因数の和:4988680

約数の個数: 20

約数和(自身を含む): 3621770064

約数和(自身を除く): 1601361549

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4988663, 14965989, 24943315, 44897967, 74829945, 134693901, 224489835, 404081703, 673469505, 2020408515]

約数ペア:

[(1, 2020408515), (3, 673469505), (5, 404081703), (9, 224489835), (15, 134693901), (27, 74829945), (45, 44897967), (81, 24943315), (135, 14965989), (405, 4988663)]