20571904

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 45254160

約数和(自身を除く): 24682256

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 58, 64, 68, 116, 128, 136, 163, 232, 256, 272, 326, 464, 493, 544, 652, 928, 986, 1088, 1304, 1856, 1972, 2176, 2608, 2771, 3712, 3944, 4352, 4727, 5216, 5542, 7424, 7888, 9454, 10432, 11084, 15776, 18908, 20864, 22168, 31552, 37816, 41728, 44336, 63104, 75632, 80359, 88672, 126208, 151264, 160718, 177344, 302528, 321436, 354688, 605056, 642872, 709376, 1210112, 1285744, 2571488, 5142976, 10285952, 20571904]

約数ペア:

[(1, 20571904), (2, 10285952), (4, 5142976), (8, 2571488), (16, 1285744), (17, 1210112), (29, 709376), (32, 642872), (34, 605056), (58, 354688), (64, 321436), (68, 302528), (116, 177344), (128, 160718), (136, 151264), (163, 126208), (232, 88672), (256, 80359), (272, 75632), (326, 63104), (464, 44336), (493, 41728), (544, 37816), (652, 31552), (928, 22168), (986, 20864), (1088, 18908), (1304, 15776), (1856, 11084), (1972, 10432), (2176, 9454), (2608, 7888), (2771, 7424), (3712, 5542), (3944, 5216), (4352, 4727)]