20441520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 240

約数和(自身を含む): 78343200

約数和(自身を除く): 57901680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 29, 30, 33, 36, 40, 44, 45, 48, 55, 58, 60, 66, 72, 80, 87, 88, 89, 90, 99, 110, 116, 120, 132, 144, 145, 165, 174, 176, 178, 180, 198, 220, 232, 240, 261, 264, 267, 290, 319, 330, 348, 356, 360, 396, 435, 440, 445, 464, 495, 522, 528, 534, 580, 638, 660, 696, 712, 720, 792, 801, 870, 880, 890, 957, 979, 990, 1044, 1068, 1160, 1276, 1305, 1320, 1335, 1392, 1424, 1584, 1595, 1602, 1740, 1780, 1914, 1958, 1980, 2088, 2136, 2320, 2552, 2581, 2610, 2640, 2670, 2871, 2937, 3190, 3204, 3480, 3560, 3828, 3916, 3960, 4005, 4176, 4272, 4785, 4895, 5104, 5162, 5220, 5340, 5742, 5874, 6380, 6408, 6960, 7120, 7656, 7743, 7832, 7920, 8010, 8811, 9570, 9790, 10324, 10440, 10680, 11484, 11748, 12760, 12816, 12905, 14355, 14685, 15312, 15486, 15664, 16020, 17622, 19140, 19580, 20648, 20880, 21360, 22968, 23229, 23496, 25520, 25810, 28391, 28710, 29370, 30972, 32040, 35244, 38280, 38715, 39160, 41296, 44055, 45936, 46458, 46992, 51620, 56782, 57420, 58740, 61944, 64080, 70488, 76560, 77430, 78320, 85173, 88110, 92916, 103240, 113564, 114840, 116145, 117480, 123888, 140976, 141955, 154860, 170346, 176220, 185832, 206480, 227128, 229680, 232290, 234960, 255519, 283910, 309720, 340692, 352440, 371664, 425865, 454256, 464580, 511038, 567820, 619440, 681384, 704880, 851730, 929160, 1022076, 1135640, 1277595, 1362768, 1703460, 1858320, 2044152, 2271280, 2555190, 3406920, 4088304, 5110380, 6813840, 10220760, 20441520]

約数ペア:

[(1, 20441520), (2, 10220760), (3, 6813840), (4, 5110380), (5, 4088304), (6, 3406920), (8, 2555190), (9, 2271280), (10, 2044152), (11, 1858320), (12, 1703460), (15, 1362768), (16, 1277595), (18, 1135640), (20, 1022076), (22, 929160), (24, 851730), (29, 704880), (30, 681384), (33, 619440), (36, 567820), (40, 511038), (44, 464580), (45, 454256), (48, 425865), (55, 371664), (58, 352440), (60, 340692), (66, 309720), (72, 283910), (80, 255519), (87, 234960), (88, 232290), (89, 229680), (90, 227128), (99, 206480), (110, 185832), (116, 176220), (120, 170346), (132, 154860), (144, 141955), (145, 140976), (165, 123888), (174, 117480), (176, 116145), (178, 114840), (180, 113564), (198, 103240), (220, 92916), (232, 88110), (240, 85173), (261, 78320), (264, 77430), (267, 76560), (290, 70488), (319, 64080), (330, 61944), (348, 58740), (356, 57420), (360, 56782), (396, 51620), (435, 46992), (440, 46458), (445, 45936), (464, 44055), (495, 41296), (522, 39160), (528, 38715), (534, 38280), (580, 35244), (638, 32040), (660, 30972), (696, 29370), (712, 28710), (720, 28391), (792, 25810), (801, 25520), (870, 23496), (880, 23229), (890, 22968), (957, 21360), (979, 20880), (990, 20648), (1044, 19580), (1068, 19140), (1160, 17622), (1276, 16020), (1305, 15664), (1320, 15486), (1335, 15312), (1392, 14685), (1424, 14355), (1584, 12905), (1595, 12816), (1602, 12760), (1740, 11748), (1780, 11484), (1914, 10680), (1958, 10440), (1980, 10324), (2088, 9790), (2136, 9570), (2320, 8811), (2552, 8010), (2581, 7920), (2610, 7832), (2640, 7743), (2670, 7656), (2871, 7120), (2937, 6960), (3190, 6408), (3204, 6380), (3480, 5874), (3560, 5742), (3828, 5340), (3916, 5220), (3960, 5162), (4005, 5104), (4176, 4895), (4272, 4785)]