278324991

素因数分解:

$3^4\times 7^1\times {\mathrm{331}}^1\times {\mathrm{1483}}^1$

素因数の和:1833

約数の個数: 40

約数和(自身を含む): 476921984

約数和(自身を除く): 198596993

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 331, 567, 993, 1483, 2317, 2979, 4449, 6951, 8937, 10381, 13347, 20853, 26811, 31143, 40041, 62559, 93429, 120123, 187677, 280287, 490873, 840861, 1472619, 3436111, 4417857, 10308333, 13253571, 30924999, 39760713, 92774997, 278324991]

約数ペア:

[(1, 278324991), (3, 92774997), (7, 39760713), (9, 30924999), (21, 13253571), (27, 10308333), (63, 4417857), (81, 3436111), (189, 1472619), (331, 840861), (567, 490873), (993, 280287), (1483, 187677), (2317, 120123), (2979, 93429), (4449, 62559), (6951, 40041), (8937, 31143), (10381, 26811), (13347, 20853)]