721386

素因数分解:

$2^1\times 3^4\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:148

約数の個数: 40

約数和(自身を含む): 1665444

約数和(自身を除く): 944058

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 73, 81, 122, 146, 162, 183, 219, 366, 438, 549, 657, 1098, 1314, 1647, 1971, 3294, 3942, 4453, 4941, 5913, 8906, 9882, 11826, 13359, 26718, 40077, 80154, 120231, 240462, 360693, 721386]

約数ペア:

[(1, 721386), (2, 360693), (3, 240462), (6, 120231), (9, 80154), (18, 40077), (27, 26718), (54, 13359), (61, 11826), (73, 9882), (81, 8906), (122, 5913), (146, 4941), (162, 4453), (183, 3942), (219, 3294), (366, 1971), (438, 1647), (549, 1314), (657, 1098)]