2019012905

素因数分解:

$5^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{761}}^1$

素因数の和:824

約数の個数: 80

約数和(自身を含む): 3227155344

約数和(自身を除く): 1208142439

約数列:

[1, 5, 7, 13, 17, 35, 49, 65, 85, 91, 119, 221, 245, 343, 455, 595, 637, 761, 833, 1105, 1547, 1715, 2401, 3185, 3805, 4165, 4459, 5327, 5831, 7735, 9893, 10829, 12005, 12937, 22295, 26635, 29155, 31213, 37289, 40817, 49465, 54145, 64685, 69251, 75803, 90559, 156065, 168181, 186445, 204085, 261023, 346255, 379015, 452795, 484757, 530621, 633913, 840905, 1177267, 1305115, 1827161, 2423785, 2653105, 3169565, 3393299, 4437391, 5886335, 8240869, 9135805, 16966495, 22186955, 23753093, 31061737, 41204345, 57686083, 118765465, 155308685, 288430415, 403802581, 2019012905]

約数ペア:

[(1, 2019012905), (5, 403802581), (7, 288430415), (13, 155308685), (17, 118765465), (35, 57686083), (49, 41204345), (65, 31061737), (85, 23753093), (91, 22186955), (119, 16966495), (221, 9135805), (245, 8240869), (343, 5886335), (455, 4437391), (595, 3393299), (637, 3169565), (761, 2653105), (833, 2423785), (1105, 1827161), (1547, 1305115), (1715, 1177267), (2401, 840905), (3185, 633913), (3805, 530621), (4165, 484757), (4459, 452795), (5327, 379015), (5831, 346255), (7735, 261023), (9893, 204085), (10829, 186445), (12005, 168181), (12937, 156065), (22295, 90559), (26635, 75803), (29155, 69251), (31213, 64685), (37289, 54145), (40817, 49465)]