27989775

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 56174976

約数和(自身を除く): 28185201

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 43, 45, 55, 75, 99, 129, 165, 215, 225, 263, 275, 387, 473, 495, 645, 789, 825, 1075, 1315, 1419, 1935, 2365, 2367, 2475, 2893, 3225, 3945, 4257, 6575, 7095, 8679, 9675, 11309, 11825, 11835, 14465, 19725, 21285, 26037, 33927, 35475, 43395, 56545, 59175, 72325, 101781, 106425, 124399, 130185, 169635, 216975, 282725, 373197, 508905, 621995, 650925, 848175, 1119591, 1865985, 2544525, 3109975, 5597955, 9329925, 27989775]

約数ペア:

[(1, 27989775), (3, 9329925), (5, 5597955), (9, 3109975), (11, 2544525), (15, 1865985), (25, 1119591), (33, 848175), (43, 650925), (45, 621995), (55, 508905), (75, 373197), (99, 282725), (129, 216975), (165, 169635), (215, 130185), (225, 124399), (263, 106425), (275, 101781), (387, 72325), (473, 59175), (495, 56545), (645, 43395), (789, 35475), (825, 33927), (1075, 26037), (1315, 21285), (1419, 19725), (1935, 14465), (2365, 11835), (2367, 11825), (2475, 11309), (2893, 9675), (3225, 8679), (3945, 7095), (4257, 6575)]