20130520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21881}}^1$

素因数の和:21915

約数の個数: 32

約数和(自身を含む): 47265120

約数和(自身を除く): 27134600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 21881, 43762, 87524, 109405, 175048, 218810, 437620, 503263, 875240, 1006526, 2013052, 2516315, 4026104, 5032630, 10065260, 20130520]

約数ペア:

[(1, 20130520), (2, 10065260), (4, 5032630), (5, 4026104), (8, 2516315), (10, 2013052), (20, 1006526), (23, 875240), (40, 503263), (46, 437620), (92, 218810), (115, 175048), (184, 109405), (230, 87524), (460, 43762), (920, 21881)]