20108500

素因数分解:

$2^2\times 5^3\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 44396352

約数和(自身を除く): 24287852

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 131, 250, 262, 307, 500, 524, 614, 655, 1228, 1310, 1535, 2620, 3070, 3275, 6140, 6550, 7675, 13100, 15350, 16375, 30700, 32750, 38375, 40217, 65500, 76750, 80434, 153500, 160868, 201085, 402170, 804340, 1005425, 2010850, 4021700, 5027125, 10054250, 20108500]

約数ペア:

[(1, 20108500), (2, 10054250), (4, 5027125), (5, 4021700), (10, 2010850), (20, 1005425), (25, 804340), (50, 402170), (100, 201085), (125, 160868), (131, 153500), (250, 80434), (262, 76750), (307, 65500), (500, 40217), (524, 38375), (614, 32750), (655, 30700), (1228, 16375), (1310, 15350), (1535, 13100), (2620, 7675), (3070, 6550), (3275, 6140)]