280496718

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{1579}}^1$

素因数の和:1797

約数の個数: 48

約数和(自身を含む): 621129600

約数和(自身を除く): 340632882

約数列:

[1, 2, 3, 6, 9, 18, 71, 139, 142, 213, 278, 417, 426, 639, 834, 1251, 1278, 1579, 2502, 3158, 4737, 9474, 9869, 14211, 19738, 28422, 29607, 59214, 88821, 112109, 177642, 219481, 224218, 336327, 438962, 658443, 672654, 1008981, 1316886, 1975329, 2017962, 3950658, 15583151, 31166302, 46749453, 93498906, 140248359, 280496718]

約数ペア:

[(1, 280496718), (2, 140248359), (3, 93498906), (6, 46749453), (9, 31166302), (18, 15583151), (71, 3950658), (139, 2017962), (142, 1975329), (213, 1316886), (278, 1008981), (417, 672654), (426, 658443), (639, 438962), (834, 336327), (1251, 224218), (1278, 219481), (1579, 177642), (2502, 112109), (3158, 88821), (4737, 59214), (9474, 29607), (9869, 28422), (14211, 19738)]