61385180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 132088320

約数和(自身を除く): 70703140

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 311, 355, 556, 622, 695, 710, 1244, 1390, 1420, 1555, 2780, 3110, 6220, 9869, 19738, 22081, 39476, 43229, 44162, 49345, 86458, 88324, 98690, 110405, 172916, 197380, 216145, 220810, 432290, 441620, 864580, 3069259, 6138518, 12277036, 15346295, 30692590, 61385180]

約数ペア:

[(1, 61385180), (2, 30692590), (4, 15346295), (5, 12277036), (10, 6138518), (20, 3069259), (71, 864580), (139, 441620), (142, 432290), (278, 220810), (284, 216145), (311, 197380), (355, 172916), (556, 110405), (622, 98690), (695, 88324), (710, 86458), (1244, 49345), (1390, 44162), (1420, 43229), (1555, 39476), (2780, 22081), (3110, 19738), (6220, 9869)]