805260285

素因数分解:

$3^4\times 5^1\times {\mathrm{1988297}}^1$

素因数の和:1988314

約数の個数: 20

約数和(自身を含む): 1443504348

約数和(自身を除く): 638244063

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1988297, 5964891, 9941485, 17894673, 29824455, 53684019, 89473365, 161052057, 268420095, 805260285]

約数ペア:

[(1, 805260285), (3, 268420095), (5, 161052057), (9, 89473365), (15, 53684019), (27, 29824455), (45, 17894673), (81, 9941485), (135, 5964891), (405, 1988297)]