25720772

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{61}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 58621248

約数和(自身を除く): 32900476

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 61, 74, 77, 122, 148, 154, 244, 259, 308, 407, 427, 518, 671, 814, 854, 1036, 1342, 1369, 1628, 1708, 2257, 2684, 2738, 2849, 4514, 4697, 5476, 5698, 9028, 9394, 9583, 11396, 15059, 15799, 18788, 19166, 24827, 30118, 31598, 38332, 49654, 60236, 63196, 83509, 99308, 105413, 167018, 173789, 210826, 334036, 347578, 421652, 584563, 695156, 918599, 1169126, 1837198, 2338252, 3674396, 6430193, 12860386, 25720772]

約数ペア:

[(1, 25720772), (2, 12860386), (4, 6430193), (7, 3674396), (11, 2338252), (14, 1837198), (22, 1169126), (28, 918599), (37, 695156), (44, 584563), (61, 421652), (74, 347578), (77, 334036), (122, 210826), (148, 173789), (154, 167018), (244, 105413), (259, 99308), (308, 83509), (407, 63196), (427, 60236), (518, 49654), (671, 38332), (814, 31598), (854, 30118), (1036, 24827), (1342, 19166), (1369, 18788), (1628, 15799), (1708, 15059), (2257, 11396), (2684, 9583), (2738, 9394), (2849, 9028), (4514, 5698), (4697, 5476)]