21266872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3607}}^1$

素因数の和:3691

約数の個数: 32

約数和(自身を含む): 44161920

約数和(自身を除く): 22895048

約数列:

[1, 2, 4, 8, 11, 22, 44, 67, 88, 134, 268, 536, 737, 1474, 2948, 3607, 5896, 7214, 14428, 28856, 39677, 79354, 158708, 241669, 317416, 483338, 966676, 1933352, 2658359, 5316718, 10633436, 21266872]

約数ペア:

[(1, 21266872), (2, 10633436), (4, 5316718), (8, 2658359), (11, 1933352), (22, 966676), (44, 483338), (67, 317416), (88, 241669), (134, 158708), (268, 79354), (536, 39677), (737, 28856), (1474, 14428), (2948, 7214), (3607, 5896)]