20682320

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{983}}^1$

素因数の和:1259

約数の個数: 40

約数和(自身を含む): 48318336

約数和(自身を除く): 27636016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 983, 1052, 1315, 1966, 2104, 2630, 3932, 4208, 4915, 5260, 7864, 9830, 10520, 15728, 19660, 21040, 39320, 78640, 258529, 517058, 1034116, 1292645, 2068232, 2585290, 4136464, 5170580, 10341160, 20682320]

約数ペア:

[(1, 20682320), (2, 10341160), (4, 5170580), (5, 4136464), (8, 2585290), (10, 2068232), (16, 1292645), (20, 1034116), (40, 517058), (80, 258529), (263, 78640), (526, 39320), (983, 21040), (1052, 19660), (1315, 15728), (1966, 10520), (2104, 9830), (2630, 7864), (3932, 5260), (4208, 4915)]