19642420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{811}}^1$

素因数の和:1000

約数の個数: 48

約数和(自身を含む): 47472768

約数和(自身を除く): 27830348

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 811, 865, 1211, 1622, 1730, 2422, 3244, 3460, 4055, 4844, 5677, 6055, 8110, 11354, 12110, 16220, 22708, 24220, 28385, 56770, 113540, 140303, 280606, 561212, 701515, 982121, 1403030, 1964242, 2806060, 3928484, 4910605, 9821210, 19642420]

約数ペア:

[(1, 19642420), (2, 9821210), (4, 4910605), (5, 3928484), (7, 2806060), (10, 1964242), (14, 1403030), (20, 982121), (28, 701515), (35, 561212), (70, 280606), (140, 140303), (173, 113540), (346, 56770), (692, 28385), (811, 24220), (865, 22708), (1211, 16220), (1622, 12110), (1730, 11354), (2422, 8110), (3244, 6055), (3460, 5677), (4055, 4844)]