405405

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:48

約数の個数: 80

約数和(自身を含む): 975744

約数和(自身を除く): 570339

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 27, 33, 35, 39, 45, 55, 63, 65, 77, 81, 91, 99, 105, 117, 135, 143, 165, 189, 195, 231, 273, 297, 315, 351, 385, 405, 429, 455, 495, 567, 585, 693, 715, 819, 891, 945, 1001, 1053, 1155, 1287, 1365, 1485, 1755, 2079, 2145, 2457, 2835, 3003, 3465, 3861, 4095, 4455, 5005, 5265, 6237, 6435, 7371, 9009, 10395, 11583, 12285, 15015, 19305, 27027, 31185, 36855, 45045, 57915, 81081, 135135, 405405]

約数ペア:

[(1, 405405), (3, 135135), (5, 81081), (7, 57915), (9, 45045), (11, 36855), (13, 31185), (15, 27027), (21, 19305), (27, 15015), (33, 12285), (35, 11583), (39, 10395), (45, 9009), (55, 7371), (63, 6435), (65, 6237), (77, 5265), (81, 5005), (91, 4455), (99, 4095), (105, 3861), (117, 3465), (135, 3003), (143, 2835), (165, 2457), (189, 2145), (195, 2079), (231, 1755), (273, 1485), (297, 1365), (315, 1287), (351, 1155), (385, 1053), (405, 1001), (429, 945), (455, 891), (495, 819), (567, 715), (585, 693)]