72929720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 169884000

約数和(自身を除く): 96954280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 109, 172, 215, 218, 344, 389, 430, 436, 545, 778, 860, 872, 1090, 1556, 1720, 1945, 2180, 3112, 3890, 4360, 4687, 7780, 9374, 15560, 16727, 18748, 23435, 33454, 37496, 42401, 46870, 66908, 83635, 84802, 93740, 133816, 167270, 169604, 187480, 212005, 334540, 339208, 424010, 669080, 848020, 1696040, 1823243, 3646486, 7292972, 9116215, 14585944, 18232430, 36464860, 72929720]

約数ペア:

[(1, 72929720), (2, 36464860), (4, 18232430), (5, 14585944), (8, 9116215), (10, 7292972), (20, 3646486), (40, 1823243), (43, 1696040), (86, 848020), (109, 669080), (172, 424010), (215, 339208), (218, 334540), (344, 212005), (389, 187480), (430, 169604), (436, 167270), (545, 133816), (778, 93740), (860, 84802), (872, 83635), (1090, 66908), (1556, 46870), (1720, 42401), (1945, 37496), (2180, 33454), (3112, 23435), (3890, 18748), (4360, 16727), (4687, 15560), (7780, 9374)]