11721915

素因数分解:

$3^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:401

約数の個数: 40

約数和(自身を含む): 21292128

約数和(自身を除く): 9570213

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 103, 135, 281, 309, 405, 515, 843, 927, 1405, 1545, 2529, 2781, 4215, 4635, 7587, 8343, 12645, 13905, 22761, 28943, 37935, 41715, 86829, 113805, 144715, 260487, 434145, 781461, 1302435, 2344383, 3907305, 11721915]

約数ペア:

[(1, 11721915), (3, 3907305), (5, 2344383), (9, 1302435), (15, 781461), (27, 434145), (45, 260487), (81, 144715), (103, 113805), (135, 86829), (281, 41715), (309, 37935), (405, 28943), (515, 22761), (843, 13905), (927, 12645), (1405, 8343), (1545, 7587), (2529, 4635), (2781, 4215)]