221271988

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{1559}}^1$

素因数の和:1744

約数の個数: 48

約数和(自身を含む): 458115840

約数和(自身を除く): 236843852

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 137, 148, 259, 274, 518, 548, 959, 1036, 1559, 1918, 3118, 3836, 5069, 6236, 10138, 10913, 20276, 21826, 35483, 43652, 57683, 70966, 115366, 141932, 213583, 230732, 403781, 427166, 807562, 854332, 1495081, 1615124, 2990162, 5980324, 7902571, 15805142, 31610284, 55317997, 110635994, 221271988]

約数ペア:

[(1, 221271988), (2, 110635994), (4, 55317997), (7, 31610284), (14, 15805142), (28, 7902571), (37, 5980324), (74, 2990162), (137, 1615124), (148, 1495081), (259, 854332), (274, 807562), (518, 427166), (548, 403781), (959, 230732), (1036, 213583), (1559, 141932), (1918, 115366), (3118, 70966), (3836, 57683), (5069, 43652), (6236, 35483), (10138, 21826), (10913, 20276)]