12820360

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 34801920

約数和(自身を除く): 21981560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 49, 56, 62, 70, 98, 124, 140, 155, 196, 211, 217, 245, 248, 280, 310, 392, 422, 434, 490, 620, 844, 868, 980, 1055, 1085, 1240, 1477, 1519, 1688, 1736, 1960, 2110, 2170, 2954, 3038, 4220, 4340, 5908, 6076, 6541, 7385, 7595, 8440, 8680, 10339, 11816, 12152, 13082, 14770, 15190, 20678, 26164, 29540, 30380, 32705, 41356, 45787, 51695, 52328, 59080, 60760, 65410, 82712, 91574, 103390, 130820, 183148, 206780, 228935, 261640, 320509, 366296, 413560, 457870, 641018, 915740, 1282036, 1602545, 1831480, 2564072, 3205090, 6410180, 12820360]

約数ペア:

[(1, 12820360), (2, 6410180), (4, 3205090), (5, 2564072), (7, 1831480), (8, 1602545), (10, 1282036), (14, 915740), (20, 641018), (28, 457870), (31, 413560), (35, 366296), (40, 320509), (49, 261640), (56, 228935), (62, 206780), (70, 183148), (98, 130820), (124, 103390), (140, 91574), (155, 82712), (196, 65410), (211, 60760), (217, 59080), (245, 52328), (248, 51695), (280, 45787), (310, 41356), (392, 32705), (422, 30380), (434, 29540), (490, 26164), (620, 20678), (844, 15190), (868, 14770), (980, 13082), (1055, 12152), (1085, 11816), (1240, 10339), (1477, 8680), (1519, 8440), (1688, 7595), (1736, 7385), (1960, 6541), (2110, 6076), (2170, 5908), (2954, 4340), (3038, 4220)]