21656964

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{743}}^1$

素因数の和:1104

約数の個数: 48

約数和(自身を含む): 57996288

約数和(自身を除く): 36339324

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 347, 694, 743, 1041, 1388, 1486, 2082, 2229, 2429, 2972, 4164, 4458, 4858, 5201, 7287, 8916, 9716, 10402, 14574, 15603, 20804, 29148, 31206, 62412, 257821, 515642, 773463, 1031284, 1546926, 1804747, 3093852, 3609494, 5414241, 7218988, 10828482, 21656964]

約数ペア:

[(1, 21656964), (2, 10828482), (3, 7218988), (4, 5414241), (6, 3609494), (7, 3093852), (12, 1804747), (14, 1546926), (21, 1031284), (28, 773463), (42, 515642), (84, 257821), (347, 62412), (694, 31206), (743, 29148), (1041, 20804), (1388, 15603), (1486, 14574), (2082, 10402), (2229, 9716), (2429, 8916), (2972, 7287), (4164, 5201), (4458, 4858)]