20881833

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 12234327

約数列:

[1, 3, 7, 21, 41, 79, 123, 237, 287, 307, 553, 861, 921, 1659, 2149, 3239, 6447, 9717, 12587, 22673, 24253, 37761, 68019, 72759, 88109, 169771, 264327, 509313, 994373, 2983119, 6960611, 20881833]

約数ペア:

[(1, 20881833), (3, 6960611), (7, 2983119), (21, 994373), (41, 509313), (79, 264327), (123, 169771), (237, 88109), (287, 72759), (307, 68019), (553, 37761), (861, 24253), (921, 22673), (1659, 12587), (2149, 9717), (3239, 6447)]