21281478

素因数分解:

$2^1\times 3^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1\times {\mathrm{317}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 43593984

約数和(自身を除く): 22312506

約数列:

[1, 2, 3, 6, 67, 134, 167, 201, 317, 334, 402, 501, 634, 951, 1002, 1902, 11189, 21239, 22378, 33567, 42478, 52939, 63717, 67134, 105878, 127434, 158817, 317634, 3546913, 7093826, 10640739, 21281478]

約数ペア:

[(1, 21281478), (2, 10640739), (3, 7093826), (6, 3546913), (67, 317634), (134, 158817), (167, 127434), (201, 105878), (317, 67134), (334, 63717), (402, 52939), (501, 42478), (634, 33567), (951, 22378), (1002, 21239), (1902, 11189)]