21997164

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{853}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 58919168

約数和(自身を除く): 36922004

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 307, 614, 853, 921, 1228, 1706, 1842, 2149, 2559, 3412, 3684, 4298, 5118, 5971, 6447, 8596, 10236, 11942, 12894, 17913, 23884, 25788, 35826, 71652, 261871, 523742, 785613, 1047484, 1571226, 1833097, 3142452, 3666194, 5499291, 7332388, 10998582, 21997164]

約数ペア:

[(1, 21997164), (2, 10998582), (3, 7332388), (4, 5499291), (6, 3666194), (7, 3142452), (12, 1833097), (14, 1571226), (21, 1047484), (28, 785613), (42, 523742), (84, 261871), (307, 71652), (614, 35826), (853, 25788), (921, 23884), (1228, 17913), (1706, 12894), (1842, 11942), (2149, 10236), (2559, 8596), (3412, 6447), (3684, 5971), (4298, 5118)]