28153476

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1399}}^1$

素因数の和:1465

約数の個数: 72

約数和(自身を含む): 78478400

約数和(自身を除く): 50324924

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 43, 52, 78, 86, 117, 129, 156, 172, 234, 258, 387, 468, 516, 559, 774, 1118, 1399, 1548, 1677, 2236, 2798, 3354, 4197, 5031, 5596, 6708, 8394, 10062, 12591, 16788, 18187, 20124, 25182, 36374, 50364, 54561, 60157, 72748, 109122, 120314, 163683, 180471, 218244, 240628, 327366, 360942, 541413, 654732, 721884, 782041, 1082826, 1564082, 2165652, 2346123, 3128164, 4692246, 7038369, 9384492, 14076738, 28153476]

約数ペア:

[(1, 28153476), (2, 14076738), (3, 9384492), (4, 7038369), (6, 4692246), (9, 3128164), (12, 2346123), (13, 2165652), (18, 1564082), (26, 1082826), (36, 782041), (39, 721884), (43, 654732), (52, 541413), (78, 360942), (86, 327366), (117, 240628), (129, 218244), (156, 180471), (172, 163683), (234, 120314), (258, 109122), (387, 72748), (468, 60157), (516, 54561), (559, 50364), (774, 36374), (1118, 25182), (1399, 20124), (1548, 18187), (1677, 16788), (2236, 12591), (2798, 10062), (3354, 8394), (4197, 6708), (5031, 5596)]