20919645

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7621}}^1$

素因数の和:7693

約数の個数: 24

約数和(自身を含む): 36859992

約数和(自身を除く): 15940347

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7621, 22863, 38105, 68589, 114315, 342945, 464881, 1394643, 2324405, 4183929, 6973215, 20919645]

約数ペア:

[(1, 20919645), (3, 6973215), (5, 4183929), (9, 2324405), (15, 1394643), (45, 464881), (61, 342945), (183, 114315), (305, 68589), (549, 38105), (915, 22863), (2745, 7621)]