278864313

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 479281152

約数和(自身を除く): 200416839

約数列:

[1, 3, 7, 13, 21, 31, 39, 83, 91, 93, 217, 249, 273, 397, 403, 581, 651, 1079, 1191, 1209, 1743, 2573, 2779, 2821, 3237, 5161, 7553, 7719, 8337, 8463, 12307, 15483, 18011, 22659, 32951, 33449, 36127, 36921, 54033, 86149, 98853, 100347, 108381, 159991, 230657, 234143, 258447, 428363, 479973, 691971, 702429, 1021481, 1119937, 1285089, 2998541, 3064443, 3359811, 7150367, 8995623, 13279253, 21451101, 39837759, 92954771, 278864313]

約数ペア:

[(1, 278864313), (3, 92954771), (7, 39837759), (13, 21451101), (21, 13279253), (31, 8995623), (39, 7150367), (83, 3359811), (91, 3064443), (93, 2998541), (217, 1285089), (249, 1119937), (273, 1021481), (397, 702429), (403, 691971), (581, 479973), (651, 428363), (1079, 258447), (1191, 234143), (1209, 230657), (1743, 159991), (2573, 108381), (2779, 100347), (2821, 98853), (3237, 86149), (5161, 54033), (7553, 36921), (7719, 36127), (8337, 33449), (8463, 32951), (12307, 22659), (15483, 18011)]