28901528080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{81569}}^1$

素因数の和:81728

約数の個数: 80

約数和(自身を含む): 69427163520

約数和(自身を除く): 40525635440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 103, 172, 206, 215, 344, 412, 430, 515, 688, 824, 860, 1030, 1648, 1720, 2060, 3440, 4120, 4429, 8240, 8858, 17716, 22145, 35432, 44290, 70864, 81569, 88580, 163138, 177160, 326276, 354320, 407845, 652552, 815690, 1305104, 1631380, 3262760, 3507467, 6525520, 7014934, 8401607, 14029868, 16803214, 17537335, 28059736, 33606428, 35074670, 42008035, 56119472, 67212856, 70149340, 84016070, 134425712, 140298680, 168032140, 280597360, 336064280, 361269101, 672128560, 722538202, 1445076404, 1806345505, 2890152808, 3612691010, 5780305616, 7225382020, 14450764040, 28901528080]

約数ペア:

[(1, 28901528080), (2, 14450764040), (4, 7225382020), (5, 5780305616), (8, 3612691010), (10, 2890152808), (16, 1806345505), (20, 1445076404), (40, 722538202), (43, 672128560), (80, 361269101), (86, 336064280), (103, 280597360), (172, 168032140), (206, 140298680), (215, 134425712), (344, 84016070), (412, 70149340), (430, 67212856), (515, 56119472), (688, 42008035), (824, 35074670), (860, 33606428), (1030, 28059736), (1648, 17537335), (1720, 16803214), (2060, 14029868), (3440, 8401607), (4120, 7014934), (4429, 6525520), (8240, 3507467), (8858, 3262760), (17716, 1631380), (22145, 1305104), (35432, 815690), (44290, 652552), (70864, 407845), (81569, 354320), (88580, 326276), (163138, 177160)]