78215215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{70783}}^1$

素因数の和:70818

約数の個数: 16

約数和(自身を含む): 107025408

約数和(自身を除く): 28810193

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 70783, 353915, 920179, 1203311, 4600895, 6016555, 15643043, 78215215]

約数ペア:

[(1, 78215215), (5, 15643043), (13, 6016555), (17, 4600895), (65, 1203311), (85, 920179), (221, 353915), (1105, 70783)]