21457952

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 44255232

約数和(自身を除く): 22797280

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 97, 124, 194, 223, 248, 388, 446, 496, 776, 892, 992, 1552, 1784, 3007, 3104, 3568, 6014, 6913, 7136, 12028, 13826, 21631, 24056, 27652, 43262, 48112, 55304, 86524, 96224, 110608, 173048, 221216, 346096, 670561, 692192, 1341122, 2682244, 5364488, 10728976, 21457952]

約数ペア:

[(1, 21457952), (2, 10728976), (4, 5364488), (8, 2682244), (16, 1341122), (31, 692192), (32, 670561), (62, 346096), (97, 221216), (124, 173048), (194, 110608), (223, 96224), (248, 86524), (388, 55304), (446, 48112), (496, 43262), (776, 27652), (892, 24056), (992, 21631), (1552, 13826), (1784, 12028), (3007, 7136), (3104, 6913), (3568, 6014)]