20912958

素因数分解:

$2^1\times 3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 128

約数和(自身を含む): 57024000

約数和(自身を除く): 36111042

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 19, 22, 27, 33, 34, 38, 51, 54, 57, 66, 99, 102, 109, 114, 153, 171, 187, 198, 209, 218, 297, 306, 323, 327, 342, 374, 418, 459, 513, 561, 594, 627, 646, 654, 918, 969, 981, 1026, 1122, 1199, 1254, 1683, 1853, 1881, 1938, 1962, 2071, 2398, 2907, 2943, 3366, 3553, 3597, 3706, 3762, 4142, 5049, 5559, 5643, 5814, 5886, 6213, 7106, 7194, 8721, 10098, 10659, 10791, 11118, 11286, 12426, 16677, 17442, 18639, 20383, 21318, 21582, 22781, 31977, 32373, 33354, 35207, 37278, 40766, 45562, 50031, 55917, 61149, 63954, 64746, 68343, 70414, 95931, 100062, 105621, 111834, 122298, 136686, 183447, 191862, 205029, 211242, 316863, 366894, 387277, 410058, 550341, 615087, 633726, 774554, 950589, 1100682, 1161831, 1230174, 1901178, 2323662, 3485493, 6970986, 10456479, 20912958]

約数ペア:

[(1, 20912958), (2, 10456479), (3, 6970986), (6, 3485493), (9, 2323662), (11, 1901178), (17, 1230174), (18, 1161831), (19, 1100682), (22, 950589), (27, 774554), (33, 633726), (34, 615087), (38, 550341), (51, 410058), (54, 387277), (57, 366894), (66, 316863), (99, 211242), (102, 205029), (109, 191862), (114, 183447), (153, 136686), (171, 122298), (187, 111834), (198, 105621), (209, 100062), (218, 95931), (297, 70414), (306, 68343), (323, 64746), (327, 63954), (342, 61149), (374, 55917), (418, 50031), (459, 45562), (513, 40766), (561, 37278), (594, 35207), (627, 33354), (646, 32373), (654, 31977), (918, 22781), (969, 21582), (981, 21318), (1026, 20383), (1122, 18639), (1199, 17442), (1254, 16677), (1683, 12426), (1853, 11286), (1881, 11118), (1938, 10791), (1962, 10659), (2071, 10098), (2398, 8721), (2907, 7194), (2943, 7106), (3366, 6213), (3553, 5886), (3597, 5814), (3706, 5643), (3762, 5559), (4142, 5049)]