31919525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 46872000

約数和(自身を除く): 14952475

約数列:

[1, 5, 11, 19, 25, 41, 55, 95, 149, 205, 209, 275, 451, 475, 745, 779, 1025, 1045, 1639, 2255, 2831, 3725, 3895, 5225, 6109, 8195, 8569, 11275, 14155, 19475, 30545, 31141, 40975, 42845, 67199, 70775, 116071, 152725, 155705, 214225, 335995, 580355, 778525, 1276781, 1679975, 2901775, 6383905, 31919525]

約数ペア:

[(1, 31919525), (5, 6383905), (11, 2901775), (19, 1679975), (25, 1276781), (41, 778525), (55, 580355), (95, 335995), (149, 214225), (205, 155705), (209, 152725), (275, 116071), (451, 70775), (475, 67199), (745, 42845), (779, 40975), (1025, 31141), (1045, 30545), (1639, 19475), (2255, 14155), (2831, 11275), (3725, 8569), (3895, 8195), (5225, 6109)]