19700145

素因数分解:

$3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1999}}^1$

素因数の和:2086

約数の個数: 32

約数和(自身を含む): 35520000

約数和(自身を除く): 15819855

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 135, 219, 365, 657, 1095, 1971, 1999, 3285, 5997, 9855, 9995, 17991, 29985, 53973, 89955, 145927, 269865, 437781, 729635, 1313343, 2188905, 3940029, 6566715, 19700145]

約数ペア:

[(1, 19700145), (3, 6566715), (5, 3940029), (9, 2188905), (15, 1313343), (27, 729635), (45, 437781), (73, 269865), (135, 145927), (219, 89955), (365, 53973), (657, 29985), (1095, 17991), (1971, 9995), (1999, 9855), (3285, 5997)]