20172464

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{331}}^1$

素因数の和:645

約数の個数: 40

約数和(自身を含む): 42361872

約数和(自身を除く): 22189408

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 293, 331, 586, 662, 1172, 1324, 2344, 2648, 3809, 4303, 4688, 5296, 7618, 8606, 15236, 17212, 30472, 34424, 60944, 68848, 96983, 193966, 387932, 775864, 1260779, 1551728, 2521558, 5043116, 10086232, 20172464]

約数ペア:

[(1, 20172464), (2, 10086232), (4, 5043116), (8, 2521558), (13, 1551728), (16, 1260779), (26, 775864), (52, 387932), (104, 193966), (208, 96983), (293, 68848), (331, 60944), (586, 34424), (662, 30472), (1172, 17212), (1324, 15236), (2344, 8606), (2648, 7618), (3809, 5296), (4303, 4688)]