19985505

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1093}}^1$

素因数の和:1177

約数の個数: 32

約数和(自身を含む): 34027776

約数和(自身を除く): 14042271

約数列:

[1, 3, 5, 15, 23, 53, 69, 115, 159, 265, 345, 795, 1093, 1219, 3279, 3657, 5465, 6095, 16395, 18285, 25139, 57929, 75417, 125695, 173787, 289645, 377085, 868935, 1332367, 3997101, 6661835, 19985505]

約数ペア:

[(1, 19985505), (3, 6661835), (5, 3997101), (15, 1332367), (23, 868935), (53, 377085), (69, 289645), (115, 173787), (159, 125695), (265, 75417), (345, 57929), (795, 25139), (1093, 18285), (1219, 16395), (3279, 6095), (3657, 5465)]