138123920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{751}}^1$

素因数の和:805

約数の個数: 120

約数和(自身を含む): 372059520

約数和(自身を除く): 233935600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 121, 152, 176, 190, 209, 220, 242, 304, 380, 418, 440, 484, 605, 751, 760, 836, 880, 968, 1045, 1210, 1502, 1520, 1672, 1936, 2090, 2299, 2420, 3004, 3344, 3755, 4180, 4598, 4840, 6008, 7510, 8261, 8360, 9196, 9680, 11495, 12016, 14269, 15020, 16522, 16720, 18392, 22990, 28538, 30040, 33044, 36784, 41305, 45980, 57076, 60080, 66088, 71345, 82610, 90871, 91960, 114152, 132176, 142690, 156959, 165220, 181742, 183920, 228304, 285380, 313918, 330440, 363484, 454355, 570760, 627836, 660880, 726968, 784795, 908710, 1141520, 1255672, 1453936, 1569590, 1726549, 1817420, 2511344, 3139180, 3453098, 3634840, 6278360, 6906196, 7269680, 8632745, 12556720, 13812392, 17265490, 27624784, 34530980, 69061960, 138123920]

約数ペア:

[(1, 138123920), (2, 69061960), (4, 34530980), (5, 27624784), (8, 17265490), (10, 13812392), (11, 12556720), (16, 8632745), (19, 7269680), (20, 6906196), (22, 6278360), (38, 3634840), (40, 3453098), (44, 3139180), (55, 2511344), (76, 1817420), (80, 1726549), (88, 1569590), (95, 1453936), (110, 1255672), (121, 1141520), (152, 908710), (176, 784795), (190, 726968), (209, 660880), (220, 627836), (242, 570760), (304, 454355), (380, 363484), (418, 330440), (440, 313918), (484, 285380), (605, 228304), (751, 183920), (760, 181742), (836, 165220), (880, 156959), (968, 142690), (1045, 132176), (1210, 114152), (1502, 91960), (1520, 90871), (1672, 82610), (1936, 71345), (2090, 66088), (2299, 60080), (2420, 57076), (3004, 45980), (3344, 41305), (3755, 36784), (4180, 33044), (4598, 30040), (4840, 28538), (6008, 22990), (7510, 18392), (8261, 16720), (8360, 16522), (9196, 15020), (9680, 14269), (11495, 12016)]