28790020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8941}}^1$

素因数の和:8980

約数の個数: 48

約数和(自身を含む): 72108288

約数和(自身を除く): 43318268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 8941, 17882, 35764, 44705, 62587, 89410, 125174, 178820, 205643, 250348, 312935, 411286, 625870, 822572, 1028215, 1251740, 1439501, 2056430, 2879002, 4112860, 5758004, 7197505, 14395010, 28790020]

約数ペア:

[(1, 28790020), (2, 14395010), (4, 7197505), (5, 5758004), (7, 4112860), (10, 2879002), (14, 2056430), (20, 1439501), (23, 1251740), (28, 1028215), (35, 822572), (46, 625870), (70, 411286), (92, 312935), (115, 250348), (140, 205643), (161, 178820), (230, 125174), (322, 89410), (460, 62587), (644, 44705), (805, 35764), (1610, 17882), (3220, 8941)]