18117180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:667

約数の個数: 72

約数和(自身を含む): 55311984

約数和(自身を除く): 37194804

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 401, 502, 753, 802, 1004, 1203, 1255, 1506, 1604, 2005, 2259, 2406, 2510, 3012, 3609, 3765, 4010, 4518, 4812, 5020, 6015, 7218, 7530, 8020, 9036, 11295, 12030, 14436, 15060, 18045, 22590, 24060, 36090, 45180, 72180, 100651, 201302, 301953, 402604, 503255, 603906, 905859, 1006510, 1207812, 1509765, 1811718, 2013020, 3019530, 3623436, 4529295, 6039060, 9058590, 18117180]

約数ペア:

[(1, 18117180), (2, 9058590), (3, 6039060), (4, 4529295), (5, 3623436), (6, 3019530), (9, 2013020), (10, 1811718), (12, 1509765), (15, 1207812), (18, 1006510), (20, 905859), (30, 603906), (36, 503255), (45, 402604), (60, 301953), (90, 201302), (180, 100651), (251, 72180), (401, 45180), (502, 36090), (753, 24060), (802, 22590), (1004, 18045), (1203, 15060), (1255, 14436), (1506, 12030), (1604, 11295), (2005, 9036), (2259, 8020), (2406, 7530), (2510, 7218), (3012, 6015), (3609, 5020), (3765, 4812), (4010, 4518)]