20318580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:406

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 43548300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 191, 197, 270, 382, 394, 540, 573, 591, 764, 788, 955, 985, 1146, 1182, 1719, 1773, 1910, 1970, 2292, 2364, 2865, 2955, 3438, 3546, 3820, 3940, 5157, 5319, 5730, 5910, 6876, 7092, 8595, 8865, 10314, 10638, 11460, 11820, 17190, 17730, 20628, 21276, 25785, 26595, 34380, 35460, 37627, 51570, 53190, 75254, 103140, 106380, 112881, 150508, 188135, 225762, 338643, 376270, 451524, 564405, 677286, 752540, 1015929, 1128810, 1354572, 1693215, 2031858, 2257620, 3386430, 4063716, 5079645, 6772860, 10159290, 20318580]

約数ペア:

[(1, 20318580), (2, 10159290), (3, 6772860), (4, 5079645), (5, 4063716), (6, 3386430), (9, 2257620), (10, 2031858), (12, 1693215), (15, 1354572), (18, 1128810), (20, 1015929), (27, 752540), (30, 677286), (36, 564405), (45, 451524), (54, 376270), (60, 338643), (90, 225762), (108, 188135), (135, 150508), (180, 112881), (191, 106380), (197, 103140), (270, 75254), (382, 53190), (394, 51570), (540, 37627), (573, 35460), (591, 34380), (764, 26595), (788, 25785), (955, 21276), (985, 20628), (1146, 17730), (1182, 17190), (1719, 11820), (1773, 11460), (1910, 10638), (1970, 10314), (2292, 8865), (2364, 8595), (2865, 7092), (2955, 6876), (3438, 5910), (3546, 5730), (3820, 5319), (3940, 5157)]