20275920

素因数分解:

$2^4\times 3^5\times 5^1\times 7^1\times {\mathrm{149}}^1$

素因数の和:184

約数の個数: 240

約数和(自身を含む): 81244800

約数和(自身を除く): 60968880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 149, 162, 168, 180, 189, 210, 216, 240, 243, 252, 270, 280, 298, 315, 324, 336, 360, 378, 405, 420, 432, 447, 486, 504, 540, 560, 567, 596, 630, 648, 720, 745, 756, 810, 840, 894, 945, 972, 1008, 1043, 1080, 1134, 1192, 1215, 1260, 1296, 1341, 1490, 1512, 1620, 1680, 1701, 1788, 1890, 1944, 2086, 2160, 2235, 2268, 2384, 2430, 2520, 2682, 2835, 2980, 3024, 3129, 3240, 3402, 3576, 3780, 3888, 4023, 4172, 4470, 4536, 4860, 5040, 5215, 5364, 5670, 5960, 6258, 6480, 6705, 6804, 7152, 7560, 8046, 8344, 8505, 8940, 9072, 9387, 9720, 10430, 10728, 11340, 11920, 12069, 12516, 13410, 13608, 15120, 15645, 16092, 16688, 17010, 17880, 18774, 19440, 20115, 20860, 21456, 22680, 24138, 25032, 26820, 27216, 28161, 31290, 32184, 34020, 35760, 36207, 37548, 40230, 41720, 45360, 46935, 48276, 50064, 53640, 56322, 60345, 62580, 64368, 68040, 72414, 75096, 80460, 83440, 84483, 93870, 96552, 107280, 112644, 120690, 125160, 136080, 140805, 144828, 150192, 160920, 168966, 181035, 187740, 193104, 225288, 241380, 250320, 253449, 281610, 289656, 321840, 337932, 362070, 375480, 422415, 450576, 482760, 506898, 563220, 579312, 675864, 724140, 750960, 844830, 965520, 1013796, 1126440, 1267245, 1351728, 1448280, 1689660, 2027592, 2252880, 2534490, 2896560, 3379320, 4055184, 5068980, 6758640, 10137960, 20275920]

約数ペア:

[(1, 20275920), (2, 10137960), (3, 6758640), (4, 5068980), (5, 4055184), (6, 3379320), (7, 2896560), (8, 2534490), (9, 2252880), (10, 2027592), (12, 1689660), (14, 1448280), (15, 1351728), (16, 1267245), (18, 1126440), (20, 1013796), (21, 965520), (24, 844830), (27, 750960), (28, 724140), (30, 675864), (35, 579312), (36, 563220), (40, 506898), (42, 482760), (45, 450576), (48, 422415), (54, 375480), (56, 362070), (60, 337932), (63, 321840), (70, 289656), (72, 281610), (80, 253449), (81, 250320), (84, 241380), (90, 225288), (105, 193104), (108, 187740), (112, 181035), (120, 168966), (126, 160920), (135, 150192), (140, 144828), (144, 140805), (149, 136080), (162, 125160), (168, 120690), (180, 112644), (189, 107280), (210, 96552), (216, 93870), (240, 84483), (243, 83440), (252, 80460), (270, 75096), (280, 72414), (298, 68040), (315, 64368), (324, 62580), (336, 60345), (360, 56322), (378, 53640), (405, 50064), (420, 48276), (432, 46935), (447, 45360), (486, 41720), (504, 40230), (540, 37548), (560, 36207), (567, 35760), (596, 34020), (630, 32184), (648, 31290), (720, 28161), (745, 27216), (756, 26820), (810, 25032), (840, 24138), (894, 22680), (945, 21456), (972, 20860), (1008, 20115), (1043, 19440), (1080, 18774), (1134, 17880), (1192, 17010), (1215, 16688), (1260, 16092), (1296, 15645), (1341, 15120), (1490, 13608), (1512, 13410), (1620, 12516), (1680, 12069), (1701, 11920), (1788, 11340), (1890, 10728), (1944, 10430), (2086, 9720), (2160, 9387), (2235, 9072), (2268, 8940), (2384, 8505), (2430, 8344), (2520, 8046), (2682, 7560), (2835, 7152), (2980, 6804), (3024, 6705), (3129, 6480), (3240, 6258), (3402, 5960), (3576, 5670), (3780, 5364), (3888, 5215), (4023, 5040), (4172, 4860), (4470, 4536)]