78917778

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{61751}}^1$

素因数の和:61830

約数の個数: 24

約数和(自身を含む): 173399616

約数和(自身を除く): 94481838

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 61751, 123502, 185253, 370506, 555759, 1111518, 4384321, 8768642, 13152963, 26305926, 39458889, 78917778]

約数ペア:

[(1, 78917778), (2, 39458889), (3, 26305926), (6, 13152963), (9, 8768642), (18, 4384321), (71, 1111518), (142, 555759), (213, 370506), (426, 185253), (639, 123502), (1278, 61751)]