18985945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{5659}}^1$

素因数の和:5736

約数の個数: 16

約数和(自身を含む): 25266240

約数和(自身を除く): 6280295

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 5659, 28295, 62249, 311245, 345199, 1725995, 3797189, 18985945]

約数ペア:

[(1, 18985945), (5, 3797189), (11, 1725995), (55, 345199), (61, 311245), (305, 62249), (671, 28295), (3355, 5659)]