19942560

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1259}}^1$

素因数の和:1291

約数の個数: 144

約数和(自身を含む): 74299680

約数和(自身を除く): 54357120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 288, 330, 352, 360, 396, 440, 480, 495, 528, 660, 720, 792, 880, 990, 1056, 1259, 1320, 1440, 1584, 1760, 1980, 2518, 2640, 3168, 3777, 3960, 5036, 5280, 6295, 7554, 7920, 10072, 11331, 12590, 13849, 15108, 15840, 18885, 20144, 22662, 25180, 27698, 30216, 37770, 40288, 41547, 45324, 50360, 55396, 56655, 60432, 69245, 75540, 83094, 90648, 100720, 110792, 113310, 120864, 124641, 138490, 151080, 166188, 181296, 201440, 207735, 221584, 226620, 249282, 276980, 302160, 332376, 362592, 415470, 443168, 453240, 498564, 553960, 604320, 623205, 664752, 830940, 906480, 997128, 1107920, 1246410, 1329504, 1661880, 1812960, 1994256, 2215840, 2492820, 3323760, 3988512, 4985640, 6647520, 9971280, 19942560]

約数ペア:

[(1, 19942560), (2, 9971280), (3, 6647520), (4, 4985640), (5, 3988512), (6, 3323760), (8, 2492820), (9, 2215840), (10, 1994256), (11, 1812960), (12, 1661880), (15, 1329504), (16, 1246410), (18, 1107920), (20, 997128), (22, 906480), (24, 830940), (30, 664752), (32, 623205), (33, 604320), (36, 553960), (40, 498564), (44, 453240), (45, 443168), (48, 415470), (55, 362592), (60, 332376), (66, 302160), (72, 276980), (80, 249282), (88, 226620), (90, 221584), (96, 207735), (99, 201440), (110, 181296), (120, 166188), (132, 151080), (144, 138490), (160, 124641), (165, 120864), (176, 113310), (180, 110792), (198, 100720), (220, 90648), (240, 83094), (264, 75540), (288, 69245), (330, 60432), (352, 56655), (360, 55396), (396, 50360), (440, 45324), (480, 41547), (495, 40288), (528, 37770), (660, 30216), (720, 27698), (792, 25180), (880, 22662), (990, 20144), (1056, 18885), (1259, 15840), (1320, 15108), (1440, 13849), (1584, 12590), (1760, 11331), (1980, 10072), (2518, 7920), (2640, 7554), (3168, 6295), (3777, 5280), (3960, 5036)]