2108125525

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{853}}^1$

素因数の和:947

約数の個数: 72

約数和(自身を含む): 3098516960

約数和(自身を除く): 990391435

約数列:

[1, 5, 11, 19, 25, 43, 55, 95, 121, 209, 215, 275, 473, 475, 605, 817, 853, 1045, 1075, 2299, 2365, 3025, 4085, 4265, 5203, 5225, 8987, 9383, 11495, 11825, 16207, 20425, 21325, 26015, 36679, 44935, 46915, 57475, 81035, 98857, 103213, 130075, 178277, 183395, 224675, 234575, 403469, 405175, 494285, 516065, 696901, 891385, 916975, 1961047, 2017345, 2471425, 2580325, 3484505, 4438159, 4456925, 7665911, 9805235, 10086725, 17422525, 22190795, 38329555, 49026175, 84325021, 110953975, 191647775, 421625105, 2108125525]

約数ペア:

[(1, 2108125525), (5, 421625105), (11, 191647775), (19, 110953975), (25, 84325021), (43, 49026175), (55, 38329555), (95, 22190795), (121, 17422525), (209, 10086725), (215, 9805235), (275, 7665911), (473, 4456925), (475, 4438159), (605, 3484505), (817, 2580325), (853, 2471425), (1045, 2017345), (1075, 1961047), (2299, 916975), (2365, 891385), (3025, 696901), (4085, 516065), (4265, 494285), (5203, 405175), (5225, 403469), (8987, 234575), (9383, 224675), (11495, 183395), (11825, 178277), (16207, 130075), (20425, 103213), (21325, 98857), (26015, 81035), (36679, 57475), (44935, 46915)]