21045465

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 42322176

約数和(自身を除く): 21276711

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 71, 105, 213, 315, 355, 497, 639, 941, 1065, 1491, 2485, 2823, 3195, 4473, 4705, 6587, 7455, 8469, 14115, 19761, 22365, 32935, 42345, 59283, 66811, 98805, 200433, 296415, 334055, 467677, 601299, 1002165, 1403031, 2338385, 3006495, 4209093, 7015155, 21045465]

約数ペア:

[(1, 21045465), (3, 7015155), (5, 4209093), (7, 3006495), (9, 2338385), (15, 1403031), (21, 1002165), (35, 601299), (45, 467677), (63, 334055), (71, 296415), (105, 200433), (213, 98805), (315, 66811), (355, 59283), (497, 42345), (639, 32935), (941, 22365), (1065, 19761), (1491, 14115), (2485, 8469), (2823, 7455), (3195, 6587), (4473, 4705)]