28100905

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{42257}}^1$

素因数の和:42288

約数の個数: 16

約数和(自身を含む): 40567680

約数和(自身を除く): 12466775

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 42257, 211285, 295799, 802883, 1478995, 4014415, 5620181, 28100905]

約数ペア:

[(1, 28100905), (5, 5620181), (7, 4014415), (19, 1478995), (35, 802883), (95, 295799), (133, 211285), (665, 42257)]