28910920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{9901}}^1$

素因数の和:9985

約数の個数: 32

約数和(自身を含む): 65947320

約数和(自身を除く): 37036400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 9901, 19802, 39604, 49505, 79208, 99010, 198020, 396040, 722773, 1445546, 2891092, 3613865, 5782184, 7227730, 14455460, 28910920]

約数ペア:

[(1, 28910920), (2, 14455460), (4, 7227730), (5, 5782184), (8, 3613865), (10, 2891092), (20, 1445546), (40, 722773), (73, 396040), (146, 198020), (292, 99010), (365, 79208), (584, 49505), (730, 39604), (1460, 19802), (2920, 9901)]