21369645

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1877}}^1$

素因数の和:1922

約数の個数: 48

約数和(自身を含む): 42187392

約数和(自身を除く): 20817747

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 165, 207, 253, 345, 495, 759, 1035, 1265, 1877, 2277, 3795, 5631, 9385, 11385, 16893, 20647, 28155, 43171, 61941, 84465, 103235, 129513, 185823, 215855, 309705, 388539, 474881, 647565, 929115, 1424643, 1942695, 2374405, 4273929, 7123215, 21369645]

約数ペア:

[(1, 21369645), (3, 7123215), (5, 4273929), (9, 2374405), (11, 1942695), (15, 1424643), (23, 929115), (33, 647565), (45, 474881), (55, 388539), (69, 309705), (99, 215855), (115, 185823), (165, 129513), (207, 103235), (253, 84465), (345, 61941), (495, 43171), (759, 28155), (1035, 20647), (1265, 16893), (1877, 11385), (2277, 9385), (3795, 5631)]