19989138

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{1021}}^1$

素因数の和:1290

約数の個数: 32

約数和(自身を含む): 43267392

約数和(自身を除く): 23278254

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 251, 502, 753, 1021, 1506, 2042, 3063, 3263, 6126, 6526, 9789, 13273, 19578, 26546, 39819, 79638, 256271, 512542, 768813, 1537626, 3331523, 6663046, 9994569, 19989138]

約数ペア:

[(1, 19989138), (2, 9994569), (3, 6663046), (6, 3331523), (13, 1537626), (26, 768813), (39, 512542), (78, 256271), (251, 79638), (502, 39819), (753, 26546), (1021, 19578), (1506, 13273), (2042, 9789), (3063, 6526), (3263, 6126)]