21760856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2351}}^1$

素因数の和:2459

約数の個数: 32

約数和(自身を含む): 44452800

約数和(自身を除く): 22691944

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2314, 2351, 4628, 4702, 9256, 9404, 18808, 30563, 61126, 122252, 209239, 244504, 418478, 836956, 1673912, 2720107, 5440214, 10880428, 21760856]

約数ペア:

[(1, 21760856), (2, 10880428), (4, 5440214), (8, 2720107), (13, 1673912), (26, 836956), (52, 418478), (89, 244504), (104, 209239), (178, 122252), (356, 61126), (712, 30563), (1157, 18808), (2314, 9404), (2351, 9256), (4628, 4702)]