19963240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{769}}^1$

素因数の和:850

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 29932760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 769, 1180, 1298, 1538, 2360, 2596, 3076, 3245, 3845, 5192, 6152, 6490, 7690, 8459, 12980, 15380, 16918, 25960, 30760, 33836, 42295, 45371, 67672, 84590, 90742, 169180, 181484, 226855, 338360, 362968, 453710, 499081, 907420, 998162, 1814840, 1996324, 2495405, 3992648, 4990810, 9981620, 19963240]

約数ペア:

[(1, 19963240), (2, 9981620), (4, 4990810), (5, 3992648), (8, 2495405), (10, 1996324), (11, 1814840), (20, 998162), (22, 907420), (40, 499081), (44, 453710), (55, 362968), (59, 338360), (88, 226855), (110, 181484), (118, 169180), (220, 90742), (236, 84590), (295, 67672), (440, 45371), (472, 42295), (590, 33836), (649, 30760), (769, 25960), (1180, 16918), (1298, 15380), (1538, 12980), (2360, 8459), (2596, 7690), (3076, 6490), (3245, 6152), (3845, 5192)]