72905760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:475

約数の個数: 144

約数和(自身を含む): 251026776

約数和(自身を除く): 178121016

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 197, 240, 257, 288, 360, 394, 480, 514, 591, 720, 771, 788, 985, 1028, 1182, 1285, 1440, 1542, 1576, 1773, 1970, 2056, 2313, 2364, 2570, 2955, 3084, 3152, 3546, 3855, 3940, 4112, 4626, 4728, 5140, 5910, 6168, 6304, 7092, 7710, 7880, 8224, 8865, 9252, 9456, 10280, 11565, 11820, 12336, 14184, 15420, 15760, 17730, 18504, 18912, 20560, 23130, 23640, 24672, 28368, 30840, 31520, 35460, 37008, 41120, 46260, 47280, 50629, 56736, 61680, 70920, 74016, 92520, 94560, 101258, 123360, 141840, 151887, 185040, 202516, 253145, 283680, 303774, 370080, 405032, 455661, 506290, 607548, 759435, 810064, 911322, 1012580, 1215096, 1518870, 1620128, 1822644, 2025160, 2278305, 2430192, 3037740, 3645288, 4050320, 4556610, 4860384, 6075480, 7290576, 8100640, 9113220, 12150960, 14581152, 18226440, 24301920, 36452880, 72905760]

約数ペア:

[(1, 72905760), (2, 36452880), (3, 24301920), (4, 18226440), (5, 14581152), (6, 12150960), (8, 9113220), (9, 8100640), (10, 7290576), (12, 6075480), (15, 4860384), (16, 4556610), (18, 4050320), (20, 3645288), (24, 3037740), (30, 2430192), (32, 2278305), (36, 2025160), (40, 1822644), (45, 1620128), (48, 1518870), (60, 1215096), (72, 1012580), (80, 911322), (90, 810064), (96, 759435), (120, 607548), (144, 506290), (160, 455661), (180, 405032), (197, 370080), (240, 303774), (257, 283680), (288, 253145), (360, 202516), (394, 185040), (480, 151887), (514, 141840), (591, 123360), (720, 101258), (771, 94560), (788, 92520), (985, 74016), (1028, 70920), (1182, 61680), (1285, 56736), (1440, 50629), (1542, 47280), (1576, 46260), (1773, 41120), (1970, 37008), (2056, 35460), (2313, 31520), (2364, 30840), (2570, 28368), (2955, 24672), (3084, 23640), (3152, 23130), (3546, 20560), (3855, 18912), (3940, 18504), (4112, 17730), (4626, 15760), (4728, 15420), (5140, 14184), (5910, 12336), (6168, 11820), (6304, 11565), (7092, 10280), (7710, 9456), (7880, 9252), (8224, 8865)]