19985306

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:334

約数の個数: 32

約数和(自身を含む): 33825600

約数和(自身を除く): 13840294

約数列:

[1, 2, 11, 22, 59, 89, 118, 173, 178, 346, 649, 979, 1298, 1903, 1958, 3806, 5251, 10207, 10502, 15397, 20414, 30794, 57761, 112277, 115522, 169367, 224554, 338734, 908423, 1816846, 9992653, 19985306]

約数ペア:

[(1, 19985306), (2, 9992653), (11, 1816846), (22, 908423), (59, 338734), (89, 224554), (118, 169367), (173, 115522), (178, 112277), (346, 57761), (649, 30794), (979, 20414), (1298, 15397), (1903, 10502), (1958, 10207), (3806, 5251)]