18991016

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{3221}}^1$

素因数の和:3305

約数の個数: 32

約数和(自身を含む): 39437280

約数和(自身を除く): 20446264

約数列:

[1, 2, 4, 8, 11, 22, 44, 67, 88, 134, 268, 536, 737, 1474, 2948, 3221, 5896, 6442, 12884, 25768, 35431, 70862, 141724, 215807, 283448, 431614, 863228, 1726456, 2373877, 4747754, 9495508, 18991016]

約数ペア:

[(1, 18991016), (2, 9495508), (4, 4747754), (8, 2373877), (11, 1726456), (22, 863228), (44, 431614), (67, 283448), (88, 215807), (134, 141724), (268, 70862), (536, 35431), (737, 25768), (1474, 12884), (2948, 6442), (3221, 5896)]