18720298

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 31912704

約数和(自身を除く): 13192406

約数列:

[1, 2, 17, 23, 34, 37, 46, 74, 391, 629, 647, 782, 851, 1258, 1294, 1702, 10999, 14467, 14881, 21998, 23939, 28934, 29762, 47878, 252977, 406963, 505954, 550597, 813926, 1101194, 9360149, 18720298]

約数ペア:

[(1, 18720298), (2, 9360149), (17, 1101194), (23, 813926), (34, 550597), (37, 505954), (46, 406963), (74, 252977), (391, 47878), (629, 29762), (647, 28934), (782, 23939), (851, 21998), (1258, 14881), (1294, 14467), (1702, 10999)]