21489636

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:278

約数の個数: 96

約数和(自身を含む): 61286400

約数和(自身を除く): 39796764

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 42, 46, 49, 69, 84, 92, 98, 138, 147, 161, 196, 227, 276, 294, 322, 343, 454, 483, 588, 644, 681, 686, 908, 966, 1029, 1127, 1362, 1372, 1589, 1932, 2058, 2254, 2724, 3178, 3381, 4116, 4508, 4767, 5221, 6356, 6762, 7889, 9534, 10442, 11123, 13524, 15663, 15778, 19068, 20884, 22246, 23667, 31326, 31556, 33369, 36547, 44492, 47334, 62652, 66738, 73094, 77861, 94668, 109641, 133476, 146188, 155722, 219282, 233583, 255829, 311444, 438564, 467166, 511658, 767487, 934332, 1023316, 1534974, 1790803, 3069948, 3581606, 5372409, 7163212, 10744818, 21489636]

約数ペア:

[(1, 21489636), (2, 10744818), (3, 7163212), (4, 5372409), (6, 3581606), (7, 3069948), (12, 1790803), (14, 1534974), (21, 1023316), (23, 934332), (28, 767487), (42, 511658), (46, 467166), (49, 438564), (69, 311444), (84, 255829), (92, 233583), (98, 219282), (138, 155722), (147, 146188), (161, 133476), (196, 109641), (227, 94668), (276, 77861), (294, 73094), (322, 66738), (343, 62652), (454, 47334), (483, 44492), (588, 36547), (644, 33369), (681, 31556), (686, 31326), (908, 23667), (966, 22246), (1029, 20884), (1127, 19068), (1362, 15778), (1372, 15663), (1589, 13524), (1932, 11123), (2058, 10442), (2254, 9534), (2724, 7889), (3178, 6762), (3381, 6356), (4116, 5221), (4508, 4767)]