20291580

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{709}}^1$

素因数の和:780

約数の個数: 96

約数和(自身を含む): 64411200

約数和(自身を除く): 44119620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 90, 106, 108, 135, 159, 180, 212, 265, 270, 318, 477, 530, 540, 636, 709, 795, 954, 1060, 1418, 1431, 1590, 1908, 2127, 2385, 2836, 2862, 3180, 3545, 4254, 4770, 5724, 6381, 7090, 7155, 8508, 9540, 10635, 12762, 14180, 14310, 19143, 21270, 25524, 28620, 31905, 37577, 38286, 42540, 63810, 75154, 76572, 95715, 112731, 127620, 150308, 187885, 191430, 225462, 338193, 375770, 382860, 450924, 563655, 676386, 751540, 1014579, 1127310, 1352772, 1690965, 2029158, 2254620, 3381930, 4058316, 5072895, 6763860, 10145790, 20291580]

約数ペア:

[(1, 20291580), (2, 10145790), (3, 6763860), (4, 5072895), (5, 4058316), (6, 3381930), (9, 2254620), (10, 2029158), (12, 1690965), (15, 1352772), (18, 1127310), (20, 1014579), (27, 751540), (30, 676386), (36, 563655), (45, 450924), (53, 382860), (54, 375770), (60, 338193), (90, 225462), (106, 191430), (108, 187885), (135, 150308), (159, 127620), (180, 112731), (212, 95715), (265, 76572), (270, 75154), (318, 63810), (477, 42540), (530, 38286), (540, 37577), (636, 31905), (709, 28620), (795, 25524), (954, 21270), (1060, 19143), (1418, 14310), (1431, 14180), (1590, 12762), (1908, 10635), (2127, 9540), (2385, 8508), (2836, 7155), (2862, 7090), (3180, 6381), (3545, 5724), (4254, 4770)]