19915694421

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1820281}}^1$

素因数の和:1820812

約数の個数: 16

約数和(自身を含む): 30405990528

約数和(自身を除く): 10490296107

約数列:

[1, 3, 7, 21, 521, 1563, 3647, 10941, 1820281, 5460843, 12741967, 38225901, 948366401, 2845099203, 6638564807, 19915694421]

約数ペア:

[(1, 19915694421), (3, 6638564807), (7, 2845099203), (21, 948366401), (521, 38225901), (1563, 12741967), (3647, 5460843), (10941, 1820281)]