28152720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{641}}^1$

素因数の和:721

約数の個数: 120

約数和(自身を含む): 96246072

約数和(自身を除く): 68093352

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 488, 549, 610, 641, 720, 732, 915, 976, 1098, 1220, 1282, 1464, 1830, 1923, 2196, 2440, 2564, 2745, 2928, 3205, 3660, 3846, 4392, 4880, 5128, 5490, 5769, 6410, 7320, 7692, 8784, 9615, 10256, 10980, 11538, 12820, 14640, 15384, 19230, 21960, 23076, 25640, 28845, 30768, 38460, 39101, 43920, 46152, 51280, 57690, 76920, 78202, 92304, 115380, 117303, 153840, 156404, 195505, 230760, 234606, 312808, 351909, 391010, 461520, 469212, 586515, 625616, 703818, 782020, 938424, 1173030, 1407636, 1564040, 1759545, 1876848, 2346060, 2815272, 3128080, 3519090, 4692120, 5630544, 7038180, 9384240, 14076360, 28152720]

約数ペア:

[(1, 28152720), (2, 14076360), (3, 9384240), (4, 7038180), (5, 5630544), (6, 4692120), (8, 3519090), (9, 3128080), (10, 2815272), (12, 2346060), (15, 1876848), (16, 1759545), (18, 1564040), (20, 1407636), (24, 1173030), (30, 938424), (36, 782020), (40, 703818), (45, 625616), (48, 586515), (60, 469212), (61, 461520), (72, 391010), (80, 351909), (90, 312808), (120, 234606), (122, 230760), (144, 195505), (180, 156404), (183, 153840), (240, 117303), (244, 115380), (305, 92304), (360, 78202), (366, 76920), (488, 57690), (549, 51280), (610, 46152), (641, 43920), (720, 39101), (732, 38460), (915, 30768), (976, 28845), (1098, 25640), (1220, 23076), (1282, 21960), (1464, 19230), (1830, 15384), (1923, 14640), (2196, 12820), (2440, 11538), (2564, 10980), (2745, 10256), (2928, 9615), (3205, 8784), (3660, 7692), (3846, 7320), (4392, 6410), (4880, 5769), (5128, 5490)]