21765240

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2879}}^1$

素因数の和:2906

約数の個数: 128

約数和(自身を含む): 82944000

約数和(自身を除く): 61178760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2879, 3780, 5758, 7560, 8637, 11516, 14395, 17274, 20153, 23032, 25911, 28790, 34548, 40306, 43185, 51822, 57580, 60459, 69096, 77733, 80612, 86370, 100765, 103644, 115160, 120918, 129555, 155466, 161224, 172740, 181377, 201530, 207288, 241836, 259110, 302295, 310932, 345480, 362754, 388665, 403060, 483672, 518220, 544131, 604590, 621864, 725508, 777330, 806120, 906885, 1036440, 1088262, 1209180, 1451016, 1554660, 1813770, 2176524, 2418360, 2720655, 3109320, 3627540, 4353048, 5441310, 7255080, 10882620, 21765240]

約数ペア:

[(1, 21765240), (2, 10882620), (3, 7255080), (4, 5441310), (5, 4353048), (6, 3627540), (7, 3109320), (8, 2720655), (9, 2418360), (10, 2176524), (12, 1813770), (14, 1554660), (15, 1451016), (18, 1209180), (20, 1088262), (21, 1036440), (24, 906885), (27, 806120), (28, 777330), (30, 725508), (35, 621864), (36, 604590), (40, 544131), (42, 518220), (45, 483672), (54, 403060), (56, 388665), (60, 362754), (63, 345480), (70, 310932), (72, 302295), (84, 259110), (90, 241836), (105, 207288), (108, 201530), (120, 181377), (126, 172740), (135, 161224), (140, 155466), (168, 129555), (180, 120918), (189, 115160), (210, 103644), (216, 100765), (252, 86370), (270, 80612), (280, 77733), (315, 69096), (360, 60459), (378, 57580), (420, 51822), (504, 43185), (540, 40306), (630, 34548), (756, 28790), (840, 25911), (945, 23032), (1080, 20153), (1260, 17274), (1512, 14395), (1890, 11516), (2520, 8637), (2879, 7560), (3780, 5758)]