81935120

素因数分解:

$2^4\times 5^1\times {\mathrm{1024189}}^1$

素因数の和:1024202

約数の個数: 20

約数和(自身を含む): 190499340

約数和(自身を除く): 108564220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1024189, 2048378, 4096756, 5120945, 8193512, 10241890, 16387024, 20483780, 40967560, 81935120]

約数ペア:

[(1, 81935120), (2, 40967560), (4, 20483780), (5, 16387024), (8, 10241890), (10, 8193512), (16, 5120945), (20, 4096756), (40, 2048378), (80, 1024189)]