18391920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:602

約数の個数: 80

約数和(自身を含む): 57451680

約数和(自身を除く): 39059760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 197, 240, 389, 394, 591, 778, 788, 985, 1167, 1182, 1556, 1576, 1945, 1970, 2334, 2364, 2955, 3112, 3152, 3890, 3940, 4668, 4728, 5835, 5910, 6224, 7780, 7880, 9336, 9456, 11670, 11820, 15560, 15760, 18672, 23340, 23640, 31120, 46680, 47280, 76633, 93360, 153266, 229899, 306532, 383165, 459798, 613064, 766330, 919596, 1149495, 1226128, 1532660, 1839192, 2298990, 3065320, 3678384, 4597980, 6130640, 9195960, 18391920]

約数ペア:

[(1, 18391920), (2, 9195960), (3, 6130640), (4, 4597980), (5, 3678384), (6, 3065320), (8, 2298990), (10, 1839192), (12, 1532660), (15, 1226128), (16, 1149495), (20, 919596), (24, 766330), (30, 613064), (40, 459798), (48, 383165), (60, 306532), (80, 229899), (120, 153266), (197, 93360), (240, 76633), (389, 47280), (394, 46680), (591, 31120), (778, 23640), (788, 23340), (985, 18672), (1167, 15760), (1182, 15560), (1556, 11820), (1576, 11670), (1945, 9456), (1970, 9336), (2334, 7880), (2364, 7780), (2955, 6224), (3112, 5910), (3152, 5835), (3890, 4728), (3940, 4668)]