21344336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1153}}^1$

素因数の和:1263

約数の個数: 40

約数和(自身を含む): 45075240

約数和(自身を除く): 23730904

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 1153, 1157, 1424, 2306, 2314, 4612, 4628, 9224, 9256, 14989, 18448, 18512, 29978, 59956, 102617, 119912, 205234, 239824, 410468, 820936, 1334021, 1641872, 2668042, 5336084, 10672168, 21344336]

約数ペア:

[(1, 21344336), (2, 10672168), (4, 5336084), (8, 2668042), (13, 1641872), (16, 1334021), (26, 820936), (52, 410468), (89, 239824), (104, 205234), (178, 119912), (208, 102617), (356, 59956), (712, 29978), (1153, 18512), (1157, 18448), (1424, 14989), (2306, 9256), (2314, 9224), (4612, 4628)]