21978804966

素因数分解:

$2^1\times 3^1\times {\mathrm{2657}}^1\times {\mathrm{1378673}}^1$

素因数の和:1381335

約数の個数: 16

約数和(自身を含む): 43974185904

約数和(自身を除く): 21995380938

約数列:

[1, 2, 3, 6, 2657, 5314, 7971, 15942, 1378673, 2757346, 4136019, 8272038, 3663134161, 7326268322, 10989402483, 21978804966]

約数ペア:

[(1, 21978804966), (2, 10989402483), (3, 7326268322), (6, 3663134161), (2657, 8272038), (5314, 4136019), (7971, 2757346), (15942, 1378673)]