18965990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{577}}^1$

素因数の和:776

約数の個数: 32

約数和(自身を含む): 36205920

約数和(自身を除く): 17239930

約数列:

[1, 2, 5, 10, 19, 38, 95, 173, 190, 346, 577, 865, 1154, 1730, 2885, 3287, 5770, 6574, 10963, 16435, 21926, 32870, 54815, 99821, 109630, 199642, 499105, 998210, 1896599, 3793198, 9482995, 18965990]

約数ペア:

[(1, 18965990), (2, 9482995), (5, 3793198), (10, 1896599), (19, 998210), (38, 499105), (95, 199642), (173, 109630), (190, 99821), (346, 54815), (577, 32870), (865, 21926), (1154, 16435), (1730, 10963), (2885, 6574), (3287, 5770)]