21717760

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1$

素因数の和:106

約数の個数: 108

約数和(自身を含む): 56071008

約数和(自身を除く): 34353248

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 47, 64, 76, 80, 94, 95, 128, 152, 160, 188, 190, 235, 256, 304, 320, 361, 376, 380, 470, 608, 640, 722, 752, 760, 893, 940, 1216, 1280, 1444, 1504, 1520, 1786, 1805, 1880, 2432, 2888, 3008, 3040, 3572, 3610, 3760, 4465, 4864, 5776, 6016, 6080, 7144, 7220, 7520, 8930, 11552, 12032, 12160, 14288, 14440, 15040, 16967, 17860, 23104, 24320, 28576, 28880, 30080, 33934, 35720, 46208, 57152, 57760, 60160, 67868, 71440, 84835, 92416, 114304, 115520, 135736, 142880, 169670, 228608, 231040, 271472, 285760, 339340, 462080, 542944, 571520, 678680, 1085888, 1143040, 1357360, 2171776, 2714720, 4343552, 5429440, 10858880, 21717760]

約数ペア:

[(1, 21717760), (2, 10858880), (4, 5429440), (5, 4343552), (8, 2714720), (10, 2171776), (16, 1357360), (19, 1143040), (20, 1085888), (32, 678680), (38, 571520), (40, 542944), (47, 462080), (64, 339340), (76, 285760), (80, 271472), (94, 231040), (95, 228608), (128, 169670), (152, 142880), (160, 135736), (188, 115520), (190, 114304), (235, 92416), (256, 84835), (304, 71440), (320, 67868), (361, 60160), (376, 57760), (380, 57152), (470, 46208), (608, 35720), (640, 33934), (722, 30080), (752, 28880), (760, 28576), (893, 24320), (940, 23104), (1216, 17860), (1280, 16967), (1444, 15040), (1504, 14440), (1520, 14288), (1786, 12160), (1805, 12032), (1880, 11552), (2432, 8930), (2888, 7520), (3008, 7220), (3040, 7144), (3572, 6080), (3610, 6016), (3760, 5776), (4465, 4864)]