28699120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:350

約数の個数: 80

約数和(自身を含む): 71424000

約数和(自身を除く): 42724880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 79, 80, 95, 152, 158, 190, 239, 304, 316, 380, 395, 478, 632, 760, 790, 956, 1195, 1264, 1501, 1520, 1580, 1912, 2390, 3002, 3160, 3824, 4541, 4780, 6004, 6320, 7505, 9082, 9560, 12008, 15010, 18164, 18881, 19120, 22705, 24016, 30020, 36328, 37762, 45410, 60040, 72656, 75524, 90820, 94405, 120080, 151048, 181640, 188810, 302096, 358739, 363280, 377620, 717478, 755240, 1434956, 1510480, 1793695, 2869912, 3587390, 5739824, 7174780, 14349560, 28699120]

約数ペア:

[(1, 28699120), (2, 14349560), (4, 7174780), (5, 5739824), (8, 3587390), (10, 2869912), (16, 1793695), (19, 1510480), (20, 1434956), (38, 755240), (40, 717478), (76, 377620), (79, 363280), (80, 358739), (95, 302096), (152, 188810), (158, 181640), (190, 151048), (239, 120080), (304, 94405), (316, 90820), (380, 75524), (395, 72656), (478, 60040), (632, 45410), (760, 37762), (790, 36328), (956, 30020), (1195, 24016), (1264, 22705), (1501, 19120), (1520, 18881), (1580, 18164), (1912, 15010), (2390, 12008), (3002, 9560), (3160, 9082), (3824, 7505), (4541, 6320), (4780, 6004)]