19874992

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{9781}}^1$

素因数の和:9916

約数の個数: 20

約数和(自身を含む): 38814976

約数和(自身を除く): 18939984

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 9781, 19562, 39124, 78248, 156496, 1242187, 2484374, 4968748, 9937496, 19874992]

約数ペア:

[(1, 19874992), (2, 9937496), (4, 4968748), (8, 2484374), (16, 1242187), (127, 156496), (254, 78248), (508, 39124), (1016, 19562), (2032, 9781)]