21381858

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{51647}}^1$

素因数の和:51678

約数の個数: 24

約数和(自身を含む): 48342528

約数和(自身を除く): 26960670

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 207, 414, 51647, 103294, 154941, 309882, 464823, 929646, 1187881, 2375762, 3563643, 7127286, 10690929, 21381858]

約数ペア:

[(1, 21381858), (2, 10690929), (3, 7127286), (6, 3563643), (9, 2375762), (18, 1187881), (23, 929646), (46, 464823), (69, 309882), (138, 154941), (207, 103294), (414, 51647)]