21351540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1753}}^1$

素因数の和:1801

約数の個数: 96

約数和(自身を含む): 70721280

約数和(自身を除く): 49369740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 105, 116, 140, 145, 174, 203, 210, 290, 348, 406, 420, 435, 580, 609, 812, 870, 1015, 1218, 1740, 1753, 2030, 2436, 3045, 3506, 4060, 5259, 6090, 7012, 8765, 10518, 12180, 12271, 17530, 21036, 24542, 26295, 35060, 36813, 49084, 50837, 52590, 61355, 73626, 101674, 105180, 122710, 147252, 152511, 184065, 203348, 245420, 254185, 305022, 355859, 368130, 508370, 610044, 711718, 736260, 762555, 1016740, 1067577, 1423436, 1525110, 1779295, 2135154, 3050220, 3558590, 4270308, 5337885, 7117180, 10675770, 21351540]

約数ペア:

[(1, 21351540), (2, 10675770), (3, 7117180), (4, 5337885), (5, 4270308), (6, 3558590), (7, 3050220), (10, 2135154), (12, 1779295), (14, 1525110), (15, 1423436), (20, 1067577), (21, 1016740), (28, 762555), (29, 736260), (30, 711718), (35, 610044), (42, 508370), (58, 368130), (60, 355859), (70, 305022), (84, 254185), (87, 245420), (105, 203348), (116, 184065), (140, 152511), (145, 147252), (174, 122710), (203, 105180), (210, 101674), (290, 73626), (348, 61355), (406, 52590), (420, 50837), (435, 49084), (580, 36813), (609, 35060), (812, 26295), (870, 24542), (1015, 21036), (1218, 17530), (1740, 12271), (1753, 12180), (2030, 10518), (2436, 8765), (3045, 7012), (3506, 6090), (4060, 5259)]