256220145

素因数分解:

$3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{25999}}^1$

素因数の和:26086

約数の個数: 32

約数和(自身を含む): 461760000

約数和(自身を除く): 205539855

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 135, 219, 365, 657, 1095, 1971, 3285, 9855, 25999, 77997, 129995, 233991, 389985, 701973, 1169955, 1897927, 3509865, 5693781, 9489635, 17081343, 28468905, 51244029, 85406715, 256220145]

約数ペア:

[(1, 256220145), (3, 85406715), (5, 51244029), (9, 28468905), (15, 17081343), (27, 9489635), (45, 5693781), (73, 3509865), (135, 1897927), (219, 1169955), (365, 701973), (657, 389985), (1095, 233991), (1971, 129995), (3285, 77997), (9855, 25999)]