20506455

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19813}}^1$

素因数の和:19847

約数の個数: 24

約数和(自身を含む): 37091808

約数和(自身を除く): 16585353

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19813, 59439, 99065, 178317, 297195, 455699, 891585, 1367097, 2278495, 4101291, 6835485, 20506455]

約数ペア:

[(1, 20506455), (3, 6835485), (5, 4101291), (9, 2278495), (15, 1367097), (23, 891585), (45, 455699), (69, 297195), (115, 178317), (207, 99065), (345, 59439), (1035, 19813)]