280439019

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^2\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 492776960

約数和(自身を除く): 212337941

約数列:

[1, 3, 7, 9, 21, 29, 63, 67, 79, 87, 201, 203, 237, 261, 469, 553, 603, 609, 711, 841, 1407, 1659, 1827, 1943, 2291, 2523, 4221, 4977, 5293, 5829, 5887, 6873, 7569, 13601, 15879, 16037, 17487, 17661, 20619, 37051, 40803, 47637, 48111, 52983, 56347, 66439, 111153, 122409, 144333, 153497, 169041, 199317, 333459, 394429, 460491, 465073, 507123, 597951, 1074479, 1183287, 1381473, 1395219, 3223437, 3549861, 4185657, 4451413, 9670311, 13354239, 31159891, 40062717, 93479673, 280439019]

約数ペア:

[(1, 280439019), (3, 93479673), (7, 40062717), (9, 31159891), (21, 13354239), (29, 9670311), (63, 4451413), (67, 4185657), (79, 3549861), (87, 3223437), (201, 1395219), (203, 1381473), (237, 1183287), (261, 1074479), (469, 597951), (553, 507123), (603, 465073), (609, 460491), (711, 394429), (841, 333459), (1407, 199317), (1659, 169041), (1827, 153497), (1943, 144333), (2291, 122409), (2523, 111153), (4221, 66439), (4977, 56347), (5293, 52983), (5829, 48111), (5887, 47637), (6873, 40803), (7569, 37051), (13601, 20619), (15879, 17661), (16037, 17487)]