278947788

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{2621}}^1$

素因数の和:2823

約数の個数: 72

約数和(自身を含む): 761617584

約数和(自身を除く): 482669796

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 181, 196, 294, 362, 543, 588, 724, 1086, 1267, 2172, 2534, 2621, 3801, 5068, 5242, 7602, 7863, 8869, 10484, 15204, 15726, 17738, 18347, 26607, 31452, 35476, 36694, 53214, 55041, 73388, 106428, 110082, 128429, 220164, 256858, 385287, 474401, 513716, 770574, 948802, 1423203, 1541148, 1897604, 2846406, 3320807, 5692812, 6641614, 9962421, 13283228, 19924842, 23245649, 39849684, 46491298, 69736947, 92982596, 139473894, 278947788]

約数ペア:

[(1, 278947788), (2, 139473894), (3, 92982596), (4, 69736947), (6, 46491298), (7, 39849684), (12, 23245649), (14, 19924842), (21, 13283228), (28, 9962421), (42, 6641614), (49, 5692812), (84, 3320807), (98, 2846406), (147, 1897604), (181, 1541148), (196, 1423203), (294, 948802), (362, 770574), (543, 513716), (588, 474401), (724, 385287), (1086, 256858), (1267, 220164), (2172, 128429), (2534, 110082), (2621, 106428), (3801, 73388), (5068, 55041), (5242, 53214), (7602, 36694), (7863, 35476), (8869, 31452), (10484, 26607), (15204, 18347), (15726, 17738)]