28689890

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{26321}}^1$

素因数の和:26437

約数の個数: 16

約数和(自身を含む): 52117560

約数和(自身を除く): 23427670

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 26321, 52642, 131605, 263210, 2868989, 5737978, 14344945, 28689890]

約数ペア:

[(1, 28689890), (2, 14344945), (5, 5737978), (10, 2868989), (109, 263210), (218, 131605), (545, 52642), (1090, 26321)]