28780215

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{40823}}^1$

素因数の和:40878

約数の個数: 16

約数和(自身を含む): 47029248

約数和(自身を除く): 18249033

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 40823, 122469, 204115, 612345, 1918681, 5756043, 9593405, 28780215]

約数ペア:

[(1, 28780215), (3, 9593405), (5, 5756043), (15, 1918681), (47, 612345), (141, 204115), (235, 122469), (705, 40823)]