3978440

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1259}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 9072000

約数和(自身を除く): 5093560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1259, 1580, 2518, 3160, 5036, 6295, 10072, 12590, 25180, 50360, 99461, 198922, 397844, 497305, 795688, 994610, 1989220, 3978440]

約数ペア:

[(1, 3978440), (2, 1989220), (4, 994610), (5, 795688), (8, 497305), (10, 397844), (20, 198922), (40, 99461), (79, 50360), (158, 25180), (316, 12590), (395, 10072), (632, 6295), (790, 5036), (1259, 3160), (1580, 2518)]