31307440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 78566400

約数和(自身を除く): 47258960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 43, 76, 80, 86, 95, 152, 172, 190, 215, 304, 344, 380, 430, 479, 688, 760, 817, 860, 958, 1520, 1634, 1720, 1916, 2395, 3268, 3440, 3832, 4085, 4790, 6536, 7664, 8170, 9101, 9580, 13072, 16340, 18202, 19160, 20597, 32680, 36404, 38320, 41194, 45505, 65360, 72808, 82388, 91010, 102985, 145616, 164776, 182020, 205970, 329552, 364040, 391343, 411940, 728080, 782686, 823880, 1565372, 1647760, 1956715, 3130744, 3913430, 6261488, 7826860, 15653720, 31307440]

約数ペア:

[(1, 31307440), (2, 15653720), (4, 7826860), (5, 6261488), (8, 3913430), (10, 3130744), (16, 1956715), (19, 1647760), (20, 1565372), (38, 823880), (40, 782686), (43, 728080), (76, 411940), (80, 391343), (86, 364040), (95, 329552), (152, 205970), (172, 182020), (190, 164776), (215, 145616), (304, 102985), (344, 91010), (380, 82388), (430, 72808), (479, 65360), (688, 45505), (760, 41194), (817, 38320), (860, 36404), (958, 32680), (1520, 20597), (1634, 19160), (1720, 18202), (1916, 16340), (2395, 13072), (3268, 9580), (3440, 9101), (3832, 8170), (4085, 7664), (4790, 6536)]