996958640

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{19381}}^1$

素因数の和:20037

約数の個数: 40

約数和(自身を含む): 2321653488

約数和(自身を除く): 1324694848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2572, 3215, 5144, 6430, 10288, 12860, 19381, 25720, 38762, 51440, 77524, 96905, 155048, 193810, 310096, 387620, 775240, 1550480, 12461983, 24923966, 49847932, 62309915, 99695864, 124619830, 199391728, 249239660, 498479320, 996958640]

約数ペア:

[(1, 996958640), (2, 498479320), (4, 249239660), (5, 199391728), (8, 124619830), (10, 99695864), (16, 62309915), (20, 49847932), (40, 24923966), (80, 12461983), (643, 1550480), (1286, 775240), (2572, 387620), (3215, 310096), (5144, 193810), (6430, 155048), (10288, 96905), (12860, 77524), (19381, 51440), (25720, 38762)]