661356693

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:223

約数の個数: 72

約数和(自身を含む): 1061289216

約数和(自身を除く): 399932523

約数列:

[1, 3, 9, 19, 47, 57, 61, 71, 141, 171, 183, 213, 361, 423, 549, 639, 893, 1083, 1159, 1349, 2679, 2867, 3249, 3337, 3477, 4047, 4331, 8037, 8601, 10011, 10431, 12141, 12993, 16967, 22021, 25631, 25803, 30033, 38979, 50901, 54473, 63403, 66063, 76893, 82289, 152703, 163419, 190209, 198189, 203557, 230679, 246867, 490257, 570627, 610671, 740601, 1034987, 1204657, 1563491, 1832013, 3104961, 3613971, 3867583, 4690473, 9314883, 10841913, 11602749, 14071419, 34808247, 73484077, 220452231, 661356693]

約数ペア:

[(1, 661356693), (3, 220452231), (9, 73484077), (19, 34808247), (47, 14071419), (57, 11602749), (61, 10841913), (71, 9314883), (141, 4690473), (171, 3867583), (183, 3613971), (213, 3104961), (361, 1832013), (423, 1563491), (549, 1204657), (639, 1034987), (893, 740601), (1083, 610671), (1159, 570627), (1349, 490257), (2679, 246867), (2867, 230679), (3249, 203557), (3337, 198189), (3477, 190209), (4047, 163419), (4331, 152703), (8037, 82289), (8601, 76893), (10011, 66063), (10431, 63403), (12141, 54473), (12993, 50901), (16967, 38979), (22021, 30033), (25631, 25803)]