9972990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{859}}^1$

素因数の和:918

約数の個数: 64

約数和(自身を含む): 27244800

約数和(自身を除く): 17271810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 43, 45, 54, 86, 90, 129, 135, 215, 258, 270, 387, 430, 645, 774, 859, 1161, 1290, 1718, 1935, 2322, 2577, 3870, 4295, 5154, 5805, 7731, 8590, 11610, 12885, 15462, 23193, 25770, 36937, 38655, 46386, 73874, 77310, 110811, 115965, 184685, 221622, 231930, 332433, 369370, 554055, 664866, 997299, 1108110, 1662165, 1994598, 3324330, 4986495, 9972990]

約数ペア:

[(1, 9972990), (2, 4986495), (3, 3324330), (5, 1994598), (6, 1662165), (9, 1108110), (10, 997299), (15, 664866), (18, 554055), (27, 369370), (30, 332433), (43, 231930), (45, 221622), (54, 184685), (86, 115965), (90, 110811), (129, 77310), (135, 73874), (215, 46386), (258, 38655), (270, 36937), (387, 25770), (430, 23193), (645, 15462), (774, 12885), (859, 11610), (1161, 8590), (1290, 7731), (1718, 5805), (1935, 5154), (2322, 4295), (2577, 3870)]