18798741

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 31030272

約数和(自身を除く): 12231531

約数列:

[1, 3, 9, 13, 31, 39, 71, 73, 93, 117, 213, 219, 279, 403, 639, 657, 923, 949, 1209, 2201, 2263, 2769, 2847, 3627, 5183, 6603, 6789, 8307, 8541, 15549, 19809, 20367, 28613, 29419, 46647, 67379, 85839, 88257, 160673, 202137, 257517, 264771, 482019, 606411, 1446057, 2088749, 6266247, 18798741]

約数ペア:

[(1, 18798741), (3, 6266247), (9, 2088749), (13, 1446057), (31, 606411), (39, 482019), (71, 264771), (73, 257517), (93, 202137), (117, 160673), (213, 88257), (219, 85839), (279, 67379), (403, 46647), (639, 29419), (657, 28613), (923, 20367), (949, 19809), (1209, 15549), (2201, 8541), (2263, 8307), (2769, 6789), (2847, 6603), (3627, 5183)]