21515004

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:360

約数の個数: 96

約数和(自身を含む): 64512000

約数和(自身を除く): 42996996

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 149, 189, 191, 252, 298, 378, 382, 447, 573, 596, 756, 764, 894, 1043, 1146, 1337, 1341, 1719, 1788, 2086, 2292, 2674, 2682, 3129, 3438, 4011, 4023, 4172, 5157, 5348, 5364, 6258, 6876, 8022, 8046, 9387, 10314, 12033, 12516, 16044, 16092, 18774, 20628, 24066, 28161, 28459, 36099, 37548, 48132, 56322, 56918, 72198, 85377, 112644, 113836, 144396, 170754, 199213, 256131, 341508, 398426, 512262, 597639, 768393, 796852, 1024524, 1195278, 1536786, 1792917, 2390556, 3073572, 3585834, 5378751, 7171668, 10757502, 21515004]

約数ペア:

[(1, 21515004), (2, 10757502), (3, 7171668), (4, 5378751), (6, 3585834), (7, 3073572), (9, 2390556), (12, 1792917), (14, 1536786), (18, 1195278), (21, 1024524), (27, 796852), (28, 768393), (36, 597639), (42, 512262), (54, 398426), (63, 341508), (84, 256131), (108, 199213), (126, 170754), (149, 144396), (189, 113836), (191, 112644), (252, 85377), (298, 72198), (378, 56918), (382, 56322), (447, 48132), (573, 37548), (596, 36099), (756, 28459), (764, 28161), (894, 24066), (1043, 20628), (1146, 18774), (1337, 16092), (1341, 16044), (1719, 12516), (1788, 12033), (2086, 10314), (2292, 9387), (2674, 8046), (2682, 8022), (3129, 6876), (3438, 6258), (4011, 5364), (4023, 5348), (4172, 5157)]