647634

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:79

約数の個数: 48

約数和(自身を含む): 1536192

約数和(自身を除く): 888558

約数列:

[1, 2, 3, 6, 13, 19, 23, 26, 38, 39, 46, 57, 69, 78, 114, 138, 247, 299, 361, 437, 494, 598, 722, 741, 874, 897, 1083, 1311, 1482, 1794, 2166, 2622, 4693, 5681, 8303, 9386, 11362, 14079, 16606, 17043, 24909, 28158, 34086, 49818, 107939, 215878, 323817, 647634]

約数ペア:

[(1, 647634), (2, 323817), (3, 215878), (6, 107939), (13, 49818), (19, 34086), (23, 28158), (26, 24909), (38, 17043), (39, 16606), (46, 14079), (57, 11362), (69, 9386), (78, 8303), (114, 5681), (138, 4693), (247, 2622), (299, 2166), (361, 1794), (437, 1482), (494, 1311), (598, 1083), (722, 897), (741, 874)]