20678580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8837}}^1$

素因数の和:8865

約数の個数: 72

約数和(自身を含む): 67557672

約数和(自身を除く): 46879092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8837, 17674, 26511, 35348, 44185, 53022, 79533, 88370, 106044, 114881, 132555, 159066, 176740, 229762, 265110, 318132, 344643, 397665, 459524, 530220, 574405, 689286, 795330, 1033929, 1148810, 1378572, 1590660, 1723215, 2067858, 2297620, 3446430, 4135716, 5169645, 6892860, 10339290, 20678580]

約数ペア:

[(1, 20678580), (2, 10339290), (3, 6892860), (4, 5169645), (5, 4135716), (6, 3446430), (9, 2297620), (10, 2067858), (12, 1723215), (13, 1590660), (15, 1378572), (18, 1148810), (20, 1033929), (26, 795330), (30, 689286), (36, 574405), (39, 530220), (45, 459524), (52, 397665), (60, 344643), (65, 318132), (78, 265110), (90, 229762), (117, 176740), (130, 159066), (156, 132555), (180, 114881), (195, 106044), (234, 88370), (260, 79533), (390, 53022), (468, 44185), (585, 35348), (780, 26511), (1170, 17674), (2340, 8837)]