20989968

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{887}}^1$

素因数の和:944

約数の個数: 80

約数和(自身を含む): 59460480

約数和(自身を除く): 38470512

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 29, 34, 48, 51, 58, 68, 87, 102, 116, 136, 174, 204, 232, 272, 348, 408, 464, 493, 696, 816, 887, 986, 1392, 1479, 1774, 1972, 2661, 2958, 3548, 3944, 5322, 5916, 7096, 7888, 10644, 11832, 14192, 15079, 21288, 23664, 25723, 30158, 42576, 45237, 51446, 60316, 77169, 90474, 102892, 120632, 154338, 180948, 205784, 241264, 308676, 361896, 411568, 437291, 617352, 723792, 874582, 1234704, 1311873, 1749164, 2623746, 3498328, 5247492, 6996656, 10494984, 20989968]

約数ペア:

[(1, 20989968), (2, 10494984), (3, 6996656), (4, 5247492), (6, 3498328), (8, 2623746), (12, 1749164), (16, 1311873), (17, 1234704), (24, 874582), (29, 723792), (34, 617352), (48, 437291), (51, 411568), (58, 361896), (68, 308676), (87, 241264), (102, 205784), (116, 180948), (136, 154338), (174, 120632), (204, 102892), (232, 90474), (272, 77169), (348, 60316), (408, 51446), (464, 45237), (493, 42576), (696, 30158), (816, 25723), (887, 23664), (986, 21288), (1392, 15079), (1479, 14192), (1774, 11832), (1972, 10644), (2661, 7888), (2958, 7096), (3548, 5916), (3944, 5322)]