20205720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:426

約数の個数: 128

約数和(自身を含む): 68817600

約数和(自身を除く): 48611880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 53, 54, 60, 72, 90, 106, 108, 120, 135, 159, 180, 212, 216, 265, 270, 318, 353, 360, 424, 477, 530, 540, 636, 706, 795, 954, 1059, 1060, 1080, 1272, 1412, 1431, 1590, 1765, 1908, 2118, 2120, 2385, 2824, 2862, 3177, 3180, 3530, 3816, 4236, 4770, 5295, 5724, 6354, 6360, 7060, 7155, 8472, 9531, 9540, 10590, 11448, 12708, 14120, 14310, 15885, 18709, 19062, 19080, 21180, 25416, 28620, 31770, 37418, 38124, 42360, 47655, 56127, 57240, 63540, 74836, 76248, 93545, 95310, 112254, 127080, 149672, 168381, 187090, 190620, 224508, 280635, 336762, 374180, 381240, 449016, 505143, 561270, 673524, 748360, 841905, 1010286, 1122540, 1347048, 1683810, 2020572, 2245080, 2525715, 3367620, 4041144, 5051430, 6735240, 10102860, 20205720]

約数ペア:

[(1, 20205720), (2, 10102860), (3, 6735240), (4, 5051430), (5, 4041144), (6, 3367620), (8, 2525715), (9, 2245080), (10, 2020572), (12, 1683810), (15, 1347048), (18, 1122540), (20, 1010286), (24, 841905), (27, 748360), (30, 673524), (36, 561270), (40, 505143), (45, 449016), (53, 381240), (54, 374180), (60, 336762), (72, 280635), (90, 224508), (106, 190620), (108, 187090), (120, 168381), (135, 149672), (159, 127080), (180, 112254), (212, 95310), (216, 93545), (265, 76248), (270, 74836), (318, 63540), (353, 57240), (360, 56127), (424, 47655), (477, 42360), (530, 38124), (540, 37418), (636, 31770), (706, 28620), (795, 25416), (954, 21180), (1059, 19080), (1060, 19062), (1080, 18709), (1272, 15885), (1412, 14310), (1431, 14120), (1590, 12708), (1765, 11448), (1908, 10590), (2118, 9540), (2120, 9531), (2385, 8472), (2824, 7155), (2862, 7060), (3177, 6360), (3180, 6354), (3530, 5724), (3816, 5295), (4236, 4770)]