21087944

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:693

約数の個数: 32

約数和(自身を含む): 40771200

約数和(自身を除く): 19683256

約数列:

[1, 2, 4, 8, 61, 79, 122, 158, 244, 316, 488, 547, 632, 1094, 2188, 4376, 4819, 9638, 19276, 33367, 38552, 43213, 66734, 86426, 133468, 172852, 266936, 345704, 2635993, 5271986, 10543972, 21087944]

約数ペア:

[(1, 21087944), (2, 10543972), (4, 5271986), (8, 2635993), (61, 345704), (79, 266936), (122, 172852), (158, 133468), (244, 86426), (316, 66734), (488, 43213), (547, 38552), (632, 33367), (1094, 19276), (2188, 9638), (4376, 4819)]