21295008

素因数分解:

$2^5\times 3^3\times 7^2\times {\mathrm{503}}^1$

素因数の和:536

約数の個数: 144

約数和(自身を含む): 72394560

約数和(自身を除く): 51099552

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 72, 84, 96, 98, 108, 112, 126, 144, 147, 168, 189, 196, 216, 224, 252, 288, 294, 336, 378, 392, 432, 441, 503, 504, 588, 672, 756, 784, 864, 882, 1006, 1008, 1176, 1323, 1509, 1512, 1568, 1764, 2012, 2016, 2352, 2646, 3018, 3024, 3521, 3528, 4024, 4527, 4704, 5292, 6036, 6048, 7042, 7056, 8048, 9054, 10563, 10584, 12072, 13581, 14084, 14112, 16096, 18108, 21126, 21168, 24144, 24647, 27162, 28168, 31689, 36216, 42252, 42336, 48288, 49294, 54324, 56336, 63378, 72432, 73941, 84504, 95067, 98588, 108648, 112672, 126756, 144864, 147882, 169008, 190134, 197176, 217296, 221823, 253512, 295764, 338016, 380268, 394352, 434592, 443646, 507024, 591528, 665469, 760536, 788704, 887292, 1014048, 1183056, 1330938, 1521072, 1774584, 2366112, 2661876, 3042144, 3549168, 5323752, 7098336, 10647504, 21295008]

約数ペア:

[(1, 21295008), (2, 10647504), (3, 7098336), (4, 5323752), (6, 3549168), (7, 3042144), (8, 2661876), (9, 2366112), (12, 1774584), (14, 1521072), (16, 1330938), (18, 1183056), (21, 1014048), (24, 887292), (27, 788704), (28, 760536), (32, 665469), (36, 591528), (42, 507024), (48, 443646), (49, 434592), (54, 394352), (56, 380268), (63, 338016), (72, 295764), (84, 253512), (96, 221823), (98, 217296), (108, 197176), (112, 190134), (126, 169008), (144, 147882), (147, 144864), (168, 126756), (189, 112672), (196, 108648), (216, 98588), (224, 95067), (252, 84504), (288, 73941), (294, 72432), (336, 63378), (378, 56336), (392, 54324), (432, 49294), (441, 48288), (503, 42336), (504, 42252), (588, 36216), (672, 31689), (756, 28168), (784, 27162), (864, 24647), (882, 24144), (1006, 21168), (1008, 21126), (1176, 18108), (1323, 16096), (1509, 14112), (1512, 14084), (1568, 13581), (1764, 12072), (2012, 10584), (2016, 10563), (2352, 9054), (2646, 8048), (3018, 7056), (3024, 7042), (3521, 6048), (3528, 6036), (4024, 5292), (4527, 4704)]