21000421436

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{308829727}}^1$

素因数の和:308829748

約数の個数: 12

約数和(自身を含む): 38912545728

約数和(自身を除く): 17912124292

約数列:

[1, 2, 4, 17, 34, 68, 308829727, 617659454, 1235318908, 5250105359, 10500210718, 21000421436]

約数ペア:

[(1, 21000421436), (2, 10500210718), (4, 5250105359), (17, 1235318908), (34, 617659454), (68, 308829727)]