21675444

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{193}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 59447808

約数和(自身を除く): 37772364

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 191, 193, 196, 294, 382, 386, 573, 579, 588, 764, 772, 1146, 1158, 1337, 1351, 2292, 2316, 2674, 2702, 4011, 4053, 5348, 5404, 8022, 8106, 9359, 9457, 16044, 16212, 18718, 18914, 28077, 28371, 36863, 37436, 37828, 56154, 56742, 73726, 110589, 112308, 113484, 147452, 221178, 258041, 442356, 516082, 774123, 1032164, 1548246, 1806287, 3096492, 3612574, 5418861, 7225148, 10837722, 21675444]

約数ペア:

[(1, 21675444), (2, 10837722), (3, 7225148), (4, 5418861), (6, 3612574), (7, 3096492), (12, 1806287), (14, 1548246), (21, 1032164), (28, 774123), (42, 516082), (49, 442356), (84, 258041), (98, 221178), (147, 147452), (191, 113484), (193, 112308), (196, 110589), (294, 73726), (382, 56742), (386, 56154), (573, 37828), (579, 37436), (588, 36863), (764, 28371), (772, 28077), (1146, 18914), (1158, 18718), (1337, 16212), (1351, 16044), (2292, 9457), (2316, 9359), (2674, 8106), (2702, 8022), (4011, 5404), (4053, 5348)]