20981094

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 47355840

約数和(自身を除く): 26374746

約数列:

[1, 2, 3, 6, 17, 29, 34, 41, 51, 58, 82, 87, 102, 123, 173, 174, 246, 346, 493, 519, 697, 986, 1038, 1189, 1394, 1479, 2091, 2378, 2941, 2958, 3567, 4182, 5017, 5882, 7093, 7134, 8823, 10034, 14186, 15051, 17646, 20213, 21279, 30102, 40426, 42558, 60639, 85289, 120581, 121278, 170578, 205697, 241162, 255867, 361743, 411394, 511734, 617091, 723486, 1234182, 3496849, 6993698, 10490547, 20981094]

約数ペア:

[(1, 20981094), (2, 10490547), (3, 6993698), (6, 3496849), (17, 1234182), (29, 723486), (34, 617091), (41, 511734), (51, 411394), (58, 361743), (82, 255867), (87, 241162), (102, 205697), (123, 170578), (173, 121278), (174, 120581), (246, 85289), (346, 60639), (493, 42558), (519, 40426), (697, 30102), (986, 21279), (1038, 20213), (1189, 17646), (1394, 15051), (1479, 14186), (2091, 10034), (2378, 8823), (2941, 7134), (2958, 7093), (3567, 5882), (4182, 5017)]