21551056

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:451

約数の個数: 40

約数和(自身を含む): 43175808

約数和(自身を除く): 21624752

約数列:

[1, 2, 4, 8, 16, 61, 71, 122, 142, 244, 284, 311, 488, 568, 622, 976, 1136, 1244, 2488, 4331, 4976, 8662, 17324, 18971, 22081, 34648, 37942, 44162, 69296, 75884, 88324, 151768, 176648, 303536, 353296, 1346941, 2693882, 5387764, 10775528, 21551056]

約数ペア:

[(1, 21551056), (2, 10775528), (4, 5387764), (8, 2693882), (16, 1346941), (61, 353296), (71, 303536), (122, 176648), (142, 151768), (244, 88324), (284, 75884), (311, 69296), (488, 44162), (568, 37942), (622, 34648), (976, 22081), (1136, 18971), (1244, 17324), (2488, 8662), (4331, 4976)]