87398575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 127670400

約数和(自身を除く): 40271825

約数列:

[1, 5, 11, 19, 25, 43, 55, 95, 209, 215, 275, 389, 473, 475, 817, 1045, 1075, 1945, 2365, 4085, 4279, 5225, 7391, 8987, 9725, 11825, 16727, 20425, 21395, 36955, 44935, 81301, 83635, 106975, 183997, 184775, 224675, 317813, 406505, 418175, 919985, 1589065, 2032525, 3495943, 4599925, 7945325, 17479715, 87398575]

約数ペア:

[(1, 87398575), (5, 17479715), (11, 7945325), (19, 4599925), (25, 3495943), (43, 2032525), (55, 1589065), (95, 919985), (209, 418175), (215, 406505), (275, 317813), (389, 224675), (473, 184775), (475, 183997), (817, 106975), (1045, 83635), (1075, 81301), (1945, 44935), (2365, 36955), (4085, 21395), (4279, 20425), (5225, 16727), (7391, 11825), (8987, 9725)]