20779416

素因数分解:

$2^3\times 3^6\times 7^1\times {\mathrm{509}}^1$

素因数の和:540

約数の個数: 112

約数和(自身を含む): 66891600

約数和(自身を除く): 46112184

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 81, 84, 108, 126, 162, 168, 189, 216, 243, 252, 324, 378, 486, 504, 509, 567, 648, 729, 756, 972, 1018, 1134, 1458, 1512, 1527, 1701, 1944, 2036, 2268, 2916, 3054, 3402, 3563, 4072, 4536, 4581, 5103, 5832, 6108, 6804, 7126, 9162, 10206, 10689, 12216, 13608, 13743, 14252, 18324, 20412, 21378, 27486, 28504, 32067, 36648, 40824, 41229, 42756, 54972, 64134, 82458, 85512, 96201, 109944, 123687, 128268, 164916, 192402, 247374, 256536, 288603, 329832, 371061, 384804, 494748, 577206, 742122, 769608, 865809, 989496, 1154412, 1484244, 1731618, 2308824, 2597427, 2968488, 3463236, 5194854, 6926472, 10389708, 20779416]

約数ペア:

[(1, 20779416), (2, 10389708), (3, 6926472), (4, 5194854), (6, 3463236), (7, 2968488), (8, 2597427), (9, 2308824), (12, 1731618), (14, 1484244), (18, 1154412), (21, 989496), (24, 865809), (27, 769608), (28, 742122), (36, 577206), (42, 494748), (54, 384804), (56, 371061), (63, 329832), (72, 288603), (81, 256536), (84, 247374), (108, 192402), (126, 164916), (162, 128268), (168, 123687), (189, 109944), (216, 96201), (243, 85512), (252, 82458), (324, 64134), (378, 54972), (486, 42756), (504, 41229), (509, 40824), (567, 36648), (648, 32067), (729, 28504), (756, 27486), (972, 21378), (1018, 20412), (1134, 18324), (1458, 14252), (1512, 13743), (1527, 13608), (1701, 12216), (1944, 10689), (2036, 10206), (2268, 9162), (2916, 7126), (3054, 6804), (3402, 6108), (3563, 5832), (4072, 5103), (4536, 4581)]