20857419

素因数分解:

$3^8\times {\mathrm{11}}^1\times {\mathrm{17}}^2$

素因数の和:69

約数の個数: 54

約数和(自身を含む): 36254244

約数和(自身を除く): 15396825

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 81, 99, 153, 187, 243, 289, 297, 459, 561, 729, 867, 891, 1377, 1683, 2187, 2601, 2673, 3179, 4131, 5049, 6561, 7803, 8019, 9537, 12393, 15147, 23409, 24057, 28611, 37179, 45441, 70227, 72171, 85833, 111537, 136323, 210681, 257499, 408969, 632043, 772497, 1226907, 1896129, 2317491, 6952473, 20857419]

約数ペア:

[(1, 20857419), (3, 6952473), (9, 2317491), (11, 1896129), (17, 1226907), (27, 772497), (33, 632043), (51, 408969), (81, 257499), (99, 210681), (153, 136323), (187, 111537), (243, 85833), (289, 72171), (297, 70227), (459, 45441), (561, 37179), (729, 28611), (867, 24057), (891, 23409), (1377, 15147), (1683, 12393), (2187, 9537), (2601, 8019), (2673, 7803), (3179, 6561), (4131, 5049)]