20885180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 50621760

約数和(自身を除く): 29736580

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 53, 61, 68, 76, 85, 95, 106, 122, 170, 190, 212, 244, 265, 305, 323, 340, 380, 530, 610, 646, 901, 1007, 1037, 1060, 1159, 1220, 1292, 1615, 1802, 2014, 2074, 2318, 3230, 3233, 3604, 4028, 4148, 4505, 4636, 5035, 5185, 5795, 6460, 6466, 9010, 10070, 10370, 11590, 12932, 16165, 17119, 18020, 19703, 20140, 20740, 23180, 32330, 34238, 39406, 54961, 61427, 64660, 68476, 78812, 85595, 98515, 109922, 122854, 171190, 197030, 219844, 245708, 274805, 307135, 342380, 394060, 549610, 614270, 1044259, 1099220, 1228540, 2088518, 4177036, 5221295, 10442590, 20885180]

約数ペア:

[(1, 20885180), (2, 10442590), (4, 5221295), (5, 4177036), (10, 2088518), (17, 1228540), (19, 1099220), (20, 1044259), (34, 614270), (38, 549610), (53, 394060), (61, 342380), (68, 307135), (76, 274805), (85, 245708), (95, 219844), (106, 197030), (122, 171190), (170, 122854), (190, 109922), (212, 98515), (244, 85595), (265, 78812), (305, 68476), (323, 64660), (340, 61427), (380, 54961), (530, 39406), (610, 34238), (646, 32330), (901, 23180), (1007, 20740), (1037, 20140), (1060, 19703), (1159, 18020), (1220, 17119), (1292, 16165), (1615, 12932), (1802, 11590), (2014, 10370), (2074, 10070), (2318, 9010), (3230, 6466), (3233, 6460), (3604, 5795), (4028, 5185), (4148, 5035), (4505, 4636)]