20512504

素因数分解:

$2^3\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 41607720

約数和(自身を除く): 21095216

約数列:

[1, 2, 4, 8, 23, 37, 46, 74, 92, 131, 148, 184, 262, 296, 524, 529, 851, 1048, 1058, 1702, 2116, 3013, 3404, 4232, 4847, 6026, 6808, 9694, 12052, 19388, 19573, 24104, 38776, 39146, 69299, 78292, 111481, 138598, 156584, 222962, 277196, 445924, 554392, 891848, 2564063, 5128126, 10256252, 20512504]

約数ペア:

[(1, 20512504), (2, 10256252), (4, 5128126), (8, 2564063), (23, 891848), (37, 554392), (46, 445924), (74, 277196), (92, 222962), (131, 156584), (148, 138598), (184, 111481), (262, 78292), (296, 69299), (524, 39146), (529, 38776), (851, 24104), (1048, 19573), (1058, 19388), (1702, 12052), (2116, 9694), (3013, 6808), (3404, 6026), (4232, 4847)]