20761440

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:229

約数の個数: 192

約数和(自身を含む): 77220864

約数和(自身を除く): 56459424

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 37, 40, 42, 48, 56, 60, 70, 74, 80, 84, 96, 105, 111, 112, 120, 140, 148, 160, 167, 168, 185, 210, 222, 224, 240, 259, 280, 296, 334, 336, 370, 420, 444, 480, 501, 518, 555, 560, 592, 668, 672, 740, 777, 835, 840, 888, 1002, 1036, 1110, 1120, 1169, 1184, 1295, 1336, 1480, 1554, 1670, 1680, 1776, 2004, 2072, 2220, 2338, 2505, 2590, 2672, 2960, 3108, 3340, 3360, 3507, 3552, 3885, 4008, 4144, 4440, 4676, 5010, 5180, 5344, 5845, 5920, 6179, 6216, 6680, 7014, 7770, 8016, 8288, 8880, 9352, 10020, 10360, 11690, 12358, 12432, 13360, 14028, 15540, 16032, 17535, 17760, 18537, 18704, 20040, 20720, 23380, 24716, 24864, 26720, 28056, 30895, 31080, 35070, 37074, 37408, 40080, 41440, 43253, 46760, 49432, 56112, 61790, 62160, 70140, 74148, 80160, 86506, 92685, 93520, 98864, 112224, 123580, 124320, 129759, 140280, 148296, 173012, 185370, 187040, 197728, 216265, 247160, 259518, 280560, 296592, 346024, 370740, 432530, 494320, 519036, 561120, 593184, 648795, 692048, 741480, 865060, 988640, 1038072, 1297590, 1384096, 1482960, 1730120, 2076144, 2595180, 2965920, 3460240, 4152288, 5190360, 6920480, 10380720, 20761440]

約数ペア:

[(1, 20761440), (2, 10380720), (3, 6920480), (4, 5190360), (5, 4152288), (6, 3460240), (7, 2965920), (8, 2595180), (10, 2076144), (12, 1730120), (14, 1482960), (15, 1384096), (16, 1297590), (20, 1038072), (21, 988640), (24, 865060), (28, 741480), (30, 692048), (32, 648795), (35, 593184), (37, 561120), (40, 519036), (42, 494320), (48, 432530), (56, 370740), (60, 346024), (70, 296592), (74, 280560), (80, 259518), (84, 247160), (96, 216265), (105, 197728), (111, 187040), (112, 185370), (120, 173012), (140, 148296), (148, 140280), (160, 129759), (167, 124320), (168, 123580), (185, 112224), (210, 98864), (222, 93520), (224, 92685), (240, 86506), (259, 80160), (280, 74148), (296, 70140), (334, 62160), (336, 61790), (370, 56112), (420, 49432), (444, 46760), (480, 43253), (501, 41440), (518, 40080), (555, 37408), (560, 37074), (592, 35070), (668, 31080), (672, 30895), (740, 28056), (777, 26720), (835, 24864), (840, 24716), (888, 23380), (1002, 20720), (1036, 20040), (1110, 18704), (1120, 18537), (1169, 17760), (1184, 17535), (1295, 16032), (1336, 15540), (1480, 14028), (1554, 13360), (1670, 12432), (1680, 12358), (1776, 11690), (2004, 10360), (2072, 10020), (2220, 9352), (2338, 8880), (2505, 8288), (2590, 8016), (2672, 7770), (2960, 7014), (3108, 6680), (3340, 6216), (3360, 6179), (3507, 5920), (3552, 5845), (3885, 5344), (4008, 5180), (4144, 5010), (4440, 4676)]