81207180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4139}}^1$

素因数の和:4263

約数の個数: 72

約数和(自身を含む): 248648400

約数和(自身を除く): 167441220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1090, 1308, 1635, 1962, 2180, 3270, 3924, 4139, 4905, 6540, 8278, 9810, 12417, 16556, 19620, 20695, 24834, 37251, 41390, 49668, 62085, 74502, 82780, 124170, 149004, 186255, 248340, 372510, 451151, 745020, 902302, 1353453, 1804604, 2255755, 2706906, 4060359, 4511510, 5413812, 6767265, 8120718, 9023020, 13534530, 16241436, 20301795, 27069060, 40603590, 81207180]

約数ペア:

[(1, 81207180), (2, 40603590), (3, 27069060), (4, 20301795), (5, 16241436), (6, 13534530), (9, 9023020), (10, 8120718), (12, 6767265), (15, 5413812), (18, 4511510), (20, 4060359), (30, 2706906), (36, 2255755), (45, 1804604), (60, 1353453), (90, 902302), (109, 745020), (180, 451151), (218, 372510), (327, 248340), (436, 186255), (545, 149004), (654, 124170), (981, 82780), (1090, 74502), (1308, 62085), (1635, 49668), (1962, 41390), (2180, 37251), (3270, 24834), (3924, 20695), (4139, 19620), (4905, 16556), (6540, 12417), (8278, 9810)]