639683639

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1\times {\mathrm{193}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 769990656

約数和(自身を除く): 130307017

約数列:

[1, 7, 37, 67, 191, 193, 259, 469, 1337, 1351, 2479, 7067, 7141, 12797, 12931, 17353, 36863, 49469, 49987, 89579, 90517, 258041, 473489, 478447, 1363931, 2469821, 3314423, 3349129, 9547517, 17288747, 91383377, 639683639]

約数ペア:

[(1, 639683639), (7, 91383377), (37, 17288747), (67, 9547517), (191, 3349129), (193, 3314423), (259, 2469821), (469, 1363931), (1337, 478447), (1351, 473489), (2479, 258041), (7067, 90517), (7141, 89579), (12797, 49987), (12931, 49469), (17353, 36863)]