21516550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 96

約数和(自身を含む): 48211200

約数和(自身を除く): 26694650

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 29, 38, 50, 55, 58, 71, 95, 110, 142, 145, 190, 209, 275, 290, 319, 355, 418, 475, 550, 551, 638, 710, 725, 781, 950, 1045, 1102, 1349, 1450, 1562, 1595, 1775, 2059, 2090, 2698, 2755, 3190, 3550, 3905, 4118, 5225, 5510, 6061, 6745, 7810, 7975, 10295, 10450, 12122, 13490, 13775, 14839, 15950, 19525, 20590, 22649, 27550, 29678, 30305, 33725, 39050, 39121, 45298, 51475, 60610, 67450, 74195, 78242, 102950, 113245, 148390, 151525, 195605, 226490, 303050, 370975, 391210, 430331, 566225, 741950, 860662, 978025, 1132450, 1956050, 2151655, 4303310, 10758275, 21516550]

約数ペア:

[(1, 21516550), (2, 10758275), (5, 4303310), (10, 2151655), (11, 1956050), (19, 1132450), (22, 978025), (25, 860662), (29, 741950), (38, 566225), (50, 430331), (55, 391210), (58, 370975), (71, 303050), (95, 226490), (110, 195605), (142, 151525), (145, 148390), (190, 113245), (209, 102950), (275, 78242), (290, 74195), (319, 67450), (355, 60610), (418, 51475), (475, 45298), (550, 39121), (551, 39050), (638, 33725), (710, 30305), (725, 29678), (781, 27550), (950, 22649), (1045, 20590), (1102, 19525), (1349, 15950), (1450, 14839), (1562, 13775), (1595, 13490), (1775, 12122), (2059, 10450), (2090, 10295), (2698, 7975), (2755, 7810), (3190, 6745), (3550, 6061), (3905, 5510), (4118, 5225)]