19808144

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{15671}}^1$

素因数の和:15758

約数の個数: 20

約数和(自身を含む): 38866560

約数和(自身を除く): 19058416

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 15671, 31342, 62684, 125368, 250736, 1238009, 2476018, 4952036, 9904072, 19808144]

約数ペア:

[(1, 19808144), (2, 9904072), (4, 4952036), (8, 2476018), (16, 1238009), (79, 250736), (158, 125368), (316, 62684), (632, 31342), (1264, 15671)]