81717870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209533}}^1$

素因数の和:209556

約数の個数: 32

約数和(自身を含む): 211210272

約数和(自身を除く): 129492402

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 209533, 419066, 628599, 1047665, 1257198, 2095330, 2723929, 3142995, 5447858, 6285990, 8171787, 13619645, 16343574, 27239290, 40858935, 81717870]

約数ペア:

[(1, 81717870), (2, 40858935), (3, 27239290), (5, 16343574), (6, 13619645), (10, 8171787), (13, 6285990), (15, 5447858), (26, 3142995), (30, 2723929), (39, 2095330), (65, 1257198), (78, 1047665), (130, 628599), (195, 419066), (390, 209533)]