256688172

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{853}}^1$

素因数の和:1519

約数の個数: 72

約数和(自身を含む): 700669424

約数和(自身を除く): 443981252

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 643, 853, 1286, 1706, 1929, 2559, 2572, 3412, 3858, 5118, 5787, 7677, 7716, 8359, 10236, 11089, 11574, 15354, 16718, 22178, 23148, 25077, 30708, 33267, 33436, 44356, 50154, 66534, 75231, 99801, 100308, 133068, 150462, 199602, 300924, 399204, 548479, 1096958, 1645437, 2193916, 3290874, 4936311, 6581748, 7130227, 9872622, 14260454, 19745244, 21390681, 28520908, 42781362, 64172043, 85562724, 128344086, 256688172]

約数ペア:

[(1, 256688172), (2, 128344086), (3, 85562724), (4, 64172043), (6, 42781362), (9, 28520908), (12, 21390681), (13, 19745244), (18, 14260454), (26, 9872622), (36, 7130227), (39, 6581748), (52, 4936311), (78, 3290874), (117, 2193916), (156, 1645437), (234, 1096958), (468, 548479), (643, 399204), (853, 300924), (1286, 199602), (1706, 150462), (1929, 133068), (2559, 100308), (2572, 99801), (3412, 75231), (3858, 66534), (5118, 50154), (5787, 44356), (7677, 33436), (7716, 33267), (8359, 30708), (10236, 25077), (11089, 23148), (11574, 22178), (15354, 16718)]