21981344

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^2\times {\mathrm{811}}^1$

素因数の和:850

約数の個数: 72

約数和(自身を含む): 54429984

約数和(自身を除く): 32448640

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 121, 154, 176, 224, 242, 308, 352, 484, 616, 811, 847, 968, 1232, 1622, 1694, 1936, 2464, 3244, 3388, 3872, 5677, 6488, 6776, 8921, 11354, 12976, 13552, 17842, 22708, 25952, 27104, 35684, 45416, 62447, 71368, 90832, 98131, 124894, 142736, 181664, 196262, 249788, 285472, 392524, 499576, 686917, 785048, 999152, 1373834, 1570096, 1998304, 2747668, 3140192, 5495336, 10990672, 21981344]

約数ペア:

[(1, 21981344), (2, 10990672), (4, 5495336), (7, 3140192), (8, 2747668), (11, 1998304), (14, 1570096), (16, 1373834), (22, 999152), (28, 785048), (32, 686917), (44, 499576), (56, 392524), (77, 285472), (88, 249788), (112, 196262), (121, 181664), (154, 142736), (176, 124894), (224, 98131), (242, 90832), (308, 71368), (352, 62447), (484, 45416), (616, 35684), (811, 27104), (847, 25952), (968, 22708), (1232, 17842), (1622, 13552), (1694, 12976), (1936, 11354), (2464, 8921), (3244, 6776), (3388, 6488), (3872, 5677)]