80456560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16487}}^1$

素因数の和:16561

約数の個数: 40

約数和(自身を含む): 190139616

約数和(自身を除く): 109683056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 16487, 32974, 65948, 82435, 131896, 164870, 263792, 329740, 659480, 1005707, 1318960, 2011414, 4022828, 5028535, 8045656, 10057070, 16091312, 20114140, 40228280, 80456560]

約数ペア:

[(1, 80456560), (2, 40228280), (4, 20114140), (5, 16091312), (8, 10057070), (10, 8045656), (16, 5028535), (20, 4022828), (40, 2011414), (61, 1318960), (80, 1005707), (122, 659480), (244, 329740), (305, 263792), (488, 164870), (610, 131896), (976, 82435), (1220, 65948), (2440, 32974), (4880, 16487)]