21661458

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{409}}^1$

素因数の和:531

約数の個数: 64

約数和(自身を含む): 54001920

約数和(自身を除く): 32340462

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 97, 182, 194, 273, 291, 409, 546, 582, 679, 818, 1227, 1261, 1358, 2037, 2454, 2522, 2863, 3783, 4074, 5317, 5726, 7566, 8589, 8827, 10634, 15951, 17178, 17654, 26481, 31902, 37219, 39673, 52962, 74438, 79346, 111657, 119019, 223314, 238038, 277711, 515749, 555422, 833133, 1031498, 1547247, 1666266, 3094494, 3610243, 7220486, 10830729, 21661458]

約数ペア:

[(1, 21661458), (2, 10830729), (3, 7220486), (6, 3610243), (7, 3094494), (13, 1666266), (14, 1547247), (21, 1031498), (26, 833133), (39, 555422), (42, 515749), (78, 277711), (91, 238038), (97, 223314), (182, 119019), (194, 111657), (273, 79346), (291, 74438), (409, 52962), (546, 39673), (582, 37219), (679, 31902), (818, 26481), (1227, 17654), (1261, 17178), (1358, 15951), (2037, 10634), (2454, 8827), (2522, 8589), (2863, 7566), (3783, 5726), (4074, 5317)]