278653203

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 437778432

約数和(自身を除く): 159125229

約数列:

[1, 3, 9, 27, 31, 71, 81, 93, 213, 243, 279, 521, 639, 837, 1563, 1917, 2201, 2511, 4689, 5751, 6603, 7533, 14067, 16151, 17253, 19809, 36991, 42201, 48453, 59427, 110973, 126603, 145359, 178281, 332919, 436077, 534843, 998757, 1146721, 1308231, 2996271, 3440163, 3924693, 8988813, 10320489, 30961467, 92884401, 278653203]

約数ペア:

[(1, 278653203), (3, 92884401), (9, 30961467), (27, 10320489), (31, 8988813), (71, 3924693), (81, 3440163), (93, 2996271), (213, 1308231), (243, 1146721), (279, 998757), (521, 534843), (639, 436077), (837, 332919), (1563, 178281), (1917, 145359), (2201, 126603), (2511, 110973), (4689, 59427), (5751, 48453), (6603, 42201), (7533, 36991), (14067, 19809), (16151, 17253)]