20690547

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10828173

約数列:

[1, 3, 17, 23, 31, 51, 69, 93, 391, 527, 569, 713, 1173, 1581, 1707, 2139, 9673, 12121, 13087, 17639, 29019, 36363, 39261, 52917, 222479, 299863, 405697, 667437, 899589, 1217091, 6896849, 20690547]

約数ペア:

[(1, 20690547), (3, 6896849), (17, 1217091), (23, 899589), (31, 667437), (51, 405697), (69, 299863), (93, 222479), (391, 52917), (527, 39261), (569, 36363), (713, 29019), (1173, 17639), (1581, 13087), (1707, 12121), (2139, 9673)]