19164904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2447}}^1$

素因数の和:2553

約数の個数: 32

約数和(自身を含む): 39657600

約数和(自身を除く): 20492696

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 178, 356, 712, 979, 1958, 2447, 3916, 4894, 7832, 9788, 19576, 26917, 53834, 107668, 215336, 217783, 435566, 871132, 1742264, 2395613, 4791226, 9582452, 19164904]

約数ペア:

[(1, 19164904), (2, 9582452), (4, 4791226), (8, 2395613), (11, 1742264), (22, 871132), (44, 435566), (88, 217783), (89, 215336), (178, 107668), (356, 53834), (712, 26917), (979, 19576), (1958, 9788), (2447, 7832), (3916, 4894)]