21658035

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{659}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 39790080

約数和(自身を除く): 18132045

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 313, 659, 939, 1565, 1977, 2191, 3295, 4613, 4695, 6573, 9885, 10955, 13839, 23065, 32865, 69195, 206267, 618801, 1031335, 1443869, 3094005, 4331607, 7219345, 21658035]

約数ペア:

[(1, 21658035), (3, 7219345), (5, 4331607), (7, 3094005), (15, 1443869), (21, 1031335), (35, 618801), (105, 206267), (313, 69195), (659, 32865), (939, 23065), (1565, 13839), (1977, 10955), (2191, 9885), (3295, 6573), (4613, 4695)]