21005914

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{11657}}^1$

素因数の和:11729

約数の個数: 16

約数和(自身を含む): 33994728

約数和(自身を除く): 12988814

約数列:

[1, 2, 17, 34, 53, 106, 901, 1802, 11657, 23314, 198169, 396338, 617821, 1235642, 10502957, 21005914]

約数ペア:

[(1, 21005914), (2, 10502957), (17, 1235642), (34, 617821), (53, 396338), (106, 198169), (901, 23314), (1802, 11657)]