20561931

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 34734336

約数和(自身を除く): 14172405

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 243, 283, 299, 351, 621, 849, 897, 1053, 1863, 2547, 2691, 3159, 3679, 5589, 6509, 7641, 8073, 11037, 19527, 22923, 24219, 33111, 58581, 68769, 72657, 84617, 99333, 175743, 253851, 297999, 527229, 761553, 893997, 1581687, 2284659, 6853977, 20561931]

約数ペア:

[(1, 20561931), (3, 6853977), (9, 2284659), (13, 1581687), (23, 893997), (27, 761553), (39, 527229), (69, 297999), (81, 253851), (117, 175743), (207, 99333), (243, 84617), (283, 72657), (299, 68769), (351, 58581), (621, 33111), (849, 24219), (897, 22923), (1053, 19527), (1863, 11037), (2547, 8073), (2691, 7641), (3159, 6509), (3679, 5589)]