21187390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7039}}^1$

素因数の和:7096

約数の個数: 32

約数和(自身を含む): 44605440

約数和(自身を除く): 23418050

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 70, 86, 215, 301, 430, 602, 1505, 3010, 7039, 14078, 35195, 49273, 70390, 98546, 246365, 302677, 492730, 605354, 1513385, 2118739, 3026770, 4237478, 10593695, 21187390]

約数ペア:

[(1, 21187390), (2, 10593695), (5, 4237478), (7, 3026770), (10, 2118739), (14, 1513385), (35, 605354), (43, 492730), (70, 302677), (86, 246365), (215, 98546), (301, 70390), (430, 49273), (602, 35195), (1505, 14078), (3010, 7039)]