21288756

素因数分解:

$2^2\times 3^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 51107840

約数和(自身を除く): 29819084

約数列:

[1, 2, 3, 4, 6, 12, 61, 122, 127, 183, 229, 244, 254, 366, 381, 458, 508, 687, 732, 762, 916, 1374, 1524, 2748, 7747, 13969, 15494, 23241, 27938, 29083, 30988, 41907, 46482, 55876, 58166, 83814, 87249, 92964, 116332, 167628, 174498, 348996, 1774063, 3548126, 5322189, 7096252, 10644378, 21288756]

約数ペア:

[(1, 21288756), (2, 10644378), (3, 7096252), (4, 5322189), (6, 3548126), (12, 1774063), (61, 348996), (122, 174498), (127, 167628), (183, 116332), (229, 92964), (244, 87249), (254, 83814), (366, 58166), (381, 55876), (458, 46482), (508, 41907), (687, 30988), (732, 29083), (762, 27938), (916, 23241), (1374, 15494), (1524, 13969), (2748, 7747)]