254920281

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 438067200

約数和(自身を除く): 183146919

約数列:

[1, 3, 7, 11, 21, 33, 61, 77, 79, 183, 229, 231, 237, 427, 553, 671, 687, 869, 1281, 1603, 1659, 2013, 2519, 2607, 4697, 4809, 4819, 6083, 7557, 13969, 14091, 14457, 17633, 18091, 18249, 33733, 41907, 52899, 53009, 54273, 97783, 101199, 126637, 153659, 159027, 199001, 293349, 371063, 379911, 460977, 597003, 1075613, 1103551, 1113189, 1393007, 3226839, 3310653, 4179021, 7724857, 12139061, 23174571, 36417183, 84973427, 254920281]

約数ペア:

[(1, 254920281), (3, 84973427), (7, 36417183), (11, 23174571), (21, 12139061), (33, 7724857), (61, 4179021), (77, 3310653), (79, 3226839), (183, 1393007), (229, 1113189), (231, 1103551), (237, 1075613), (427, 597003), (553, 460977), (671, 379911), (687, 371063), (869, 293349), (1281, 199001), (1603, 159027), (1659, 153659), (2013, 126637), (2519, 101199), (2607, 97783), (4697, 54273), (4809, 53009), (4819, 52899), (6083, 41907), (7557, 33733), (13969, 18249), (14091, 18091), (14457, 17633)]