21053072

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 60

約数和(自身を含む): 45110580

約数和(自身を除く): 24057508

約数列:

[1, 2, 4, 8, 16, 17, 29, 34, 58, 68, 116, 136, 157, 232, 272, 289, 314, 464, 493, 578, 628, 986, 1156, 1256, 1972, 2312, 2512, 2669, 3944, 4553, 4624, 5338, 7888, 8381, 9106, 10676, 16762, 18212, 21352, 33524, 36424, 42704, 45373, 67048, 72848, 77401, 90746, 134096, 154802, 181492, 309604, 362984, 619208, 725968, 1238416, 1315817, 2631634, 5263268, 10526536, 21053072]

約数ペア:

[(1, 21053072), (2, 10526536), (4, 5263268), (8, 2631634), (16, 1315817), (17, 1238416), (29, 725968), (34, 619208), (58, 362984), (68, 309604), (116, 181492), (136, 154802), (157, 134096), (232, 90746), (272, 77401), (289, 72848), (314, 67048), (464, 45373), (493, 42704), (578, 36424), (628, 33524), (986, 21352), (1156, 18212), (1256, 16762), (1972, 10676), (2312, 9106), (2512, 8381), (2669, 7888), (3944, 5338), (4553, 4624)]