21113883

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 37939200

約数和(自身を除く): 16825317

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 399, 569, 589, 651, 1197, 1707, 1767, 1953, 3983, 4123, 5121, 5301, 10811, 11949, 12369, 17639, 32433, 35847, 37107, 52917, 75677, 97299, 123473, 158751, 227031, 335141, 370419, 681093, 1005423, 1111257, 2345987, 3016269, 7037961, 21113883]

約数ペア:

[(1, 21113883), (3, 7037961), (7, 3016269), (9, 2345987), (19, 1111257), (21, 1005423), (31, 681093), (57, 370419), (63, 335141), (93, 227031), (133, 158751), (171, 123473), (217, 97299), (279, 75677), (399, 52917), (569, 37107), (589, 35847), (651, 32433), (1197, 17639), (1707, 12369), (1767, 11949), (1953, 10811), (3983, 5301), (4123, 5121)]