21040580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1621}}^1$

素因数の和:1700

約数の個数: 48

約数和(自身を含む): 49049280

約数和(自身を除く): 28008700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1298, 1621, 2596, 3242, 3245, 6484, 6490, 8105, 12980, 16210, 17831, 32420, 35662, 71324, 89155, 95639, 178310, 191278, 356620, 382556, 478195, 956390, 1052029, 1912780, 2104058, 4208116, 5260145, 10520290, 21040580]

約数ペア:

[(1, 21040580), (2, 10520290), (4, 5260145), (5, 4208116), (10, 2104058), (11, 1912780), (20, 1052029), (22, 956390), (44, 478195), (55, 382556), (59, 356620), (110, 191278), (118, 178310), (220, 95639), (236, 89155), (295, 71324), (590, 35662), (649, 32420), (1180, 17831), (1298, 16210), (1621, 12980), (2596, 8105), (3242, 6490), (3245, 6484)]