161901875

素因数分解:

$5^4\times {\mathrm{83}}^1\times {\mathrm{3121}}^1$

素因数の和:3224

約数の個数: 20

約数和(自身を含む): 204815688

約数和(自身を除く): 42913813

約数列:

[1, 5, 25, 83, 125, 415, 625, 2075, 3121, 10375, 15605, 51875, 78025, 259043, 390125, 1295215, 1950625, 6476075, 32380375, 161901875]

約数ペア:

[(1, 161901875), (5, 32380375), (25, 6476075), (83, 1950625), (125, 1295215), (415, 390125), (625, 259043), (2075, 78025), (3121, 51875), (10375, 15605)]