18987420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{13759}}^1$

素因数の和:13794

約数の個数: 48

約数和(自身を含む): 55480320

約数和(自身を除く): 36492900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 13759, 27518, 41277, 55036, 68795, 82554, 137590, 165108, 206385, 275180, 316457, 412770, 632914, 825540, 949371, 1265828, 1582285, 1898742, 3164570, 3797484, 4746855, 6329140, 9493710, 18987420]

約数ペア:

[(1, 18987420), (2, 9493710), (3, 6329140), (4, 4746855), (5, 3797484), (6, 3164570), (10, 1898742), (12, 1582285), (15, 1265828), (20, 949371), (23, 825540), (30, 632914), (46, 412770), (60, 316457), (69, 275180), (92, 206385), (115, 165108), (138, 137590), (230, 82554), (276, 68795), (345, 55036), (460, 41277), (690, 27518), (1380, 13759)]