20909728

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^3\times {\mathrm{19}}^1$

素因数の和:87

約数の個数: 96

約数和(自身を含む): 52617600

約数和(自身を除く): 31707872

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 32, 34, 38, 56, 68, 76, 112, 119, 133, 136, 152, 224, 238, 266, 272, 289, 304, 323, 476, 532, 544, 578, 608, 646, 952, 1064, 1156, 1292, 1904, 2023, 2128, 2261, 2312, 2584, 3808, 4046, 4256, 4522, 4624, 4913, 5168, 5491, 8092, 9044, 9248, 9826, 10336, 10982, 16184, 18088, 19652, 21964, 32368, 34391, 36176, 38437, 39304, 43928, 64736, 68782, 72352, 76874, 78608, 87856, 93347, 137564, 153748, 157216, 175712, 186694, 275128, 307496, 373388, 550256, 614992, 653429, 746776, 1100512, 1229984, 1306858, 1493552, 2613716, 2987104, 5227432, 10454864, 20909728]

約数ペア:

[(1, 20909728), (2, 10454864), (4, 5227432), (7, 2987104), (8, 2613716), (14, 1493552), (16, 1306858), (17, 1229984), (19, 1100512), (28, 746776), (32, 653429), (34, 614992), (38, 550256), (56, 373388), (68, 307496), (76, 275128), (112, 186694), (119, 175712), (133, 157216), (136, 153748), (152, 137564), (224, 93347), (238, 87856), (266, 78608), (272, 76874), (289, 72352), (304, 68782), (323, 64736), (476, 43928), (532, 39304), (544, 38437), (578, 36176), (608, 34391), (646, 32368), (952, 21964), (1064, 19652), (1156, 18088), (1292, 16184), (1904, 10982), (2023, 10336), (2128, 9826), (2261, 9248), (2312, 9044), (2584, 8092), (3808, 5491), (4046, 5168), (4256, 4913), (4522, 4624)]