20017648

素因数分解:

$2^4\times 7^1\times {\mathrm{367}}^1\times {\mathrm{487}}^1$

素因数の和:869

約数の個数: 40

約数和(自身を含む): 44536832

約数和(自身を除く): 24519184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 367, 487, 734, 974, 1468, 1948, 2569, 2936, 3409, 3896, 5138, 5872, 6818, 7792, 10276, 13636, 20552, 27272, 41104, 54544, 178729, 357458, 714916, 1251103, 1429832, 2502206, 2859664, 5004412, 10008824, 20017648]

約数ペア:

[(1, 20017648), (2, 10008824), (4, 5004412), (7, 2859664), (8, 2502206), (14, 1429832), (16, 1251103), (28, 714916), (56, 357458), (112, 178729), (367, 54544), (487, 41104), (734, 27272), (974, 20552), (1468, 13636), (1948, 10276), (2569, 7792), (2936, 6818), (3409, 5872), (3896, 5138)]