21704776

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 41961600

約数和(自身を除く): 20256824

約数列:

[1, 2, 4, 8, 61, 79, 122, 158, 244, 316, 488, 563, 632, 1126, 2252, 4504, 4819, 9638, 19276, 34343, 38552, 44477, 68686, 88954, 137372, 177908, 274744, 355816, 2713097, 5426194, 10852388, 21704776]

約数ペア:

[(1, 21704776), (2, 10852388), (4, 5426194), (8, 2713097), (61, 355816), (79, 274744), (122, 177908), (158, 137372), (244, 88954), (316, 68686), (488, 44477), (563, 38552), (632, 34343), (1126, 19276), (2252, 9638), (4504, 4819)]