21119355

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1453}}^1$

素因数の和:1500

約数の個数: 48

約数和(自身を含む): 40828320

約数和(自身を除く): 19708965

約数列:

[1, 3, 5, 9, 15, 17, 19, 45, 51, 57, 85, 95, 153, 171, 255, 285, 323, 765, 855, 969, 1453, 1615, 2907, 4359, 4845, 7265, 13077, 14535, 21795, 24701, 27607, 65385, 74103, 82821, 123505, 138035, 222309, 248463, 370515, 414105, 469319, 1111545, 1242315, 1407957, 2346595, 4223871, 7039785, 21119355]

約数ペア:

[(1, 21119355), (3, 7039785), (5, 4223871), (9, 2346595), (15, 1407957), (17, 1242315), (19, 1111545), (45, 469319), (51, 414105), (57, 370515), (85, 248463), (95, 222309), (153, 138035), (171, 123505), (255, 82821), (285, 74103), (323, 65385), (765, 27607), (855, 24701), (969, 21795), (1453, 14535), (1615, 13077), (2907, 7265), (4359, 4845)]