257971672

素因数分解:

$2^3\times 7^3\times {\mathrm{41}}^1\times {\mathrm{2293}}^1$

素因数の和:2361

約数の個数: 64

約数和(自身を含む): 578088000

約数和(自身を除く): 320116328

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 49, 56, 82, 98, 164, 196, 287, 328, 343, 392, 574, 686, 1148, 1372, 2009, 2293, 2296, 2744, 4018, 4586, 8036, 9172, 14063, 16051, 16072, 18344, 28126, 32102, 56252, 64204, 94013, 112357, 112504, 128408, 188026, 224714, 376052, 449428, 658091, 752104, 786499, 898856, 1316182, 1572998, 2632364, 3145996, 4606637, 5264728, 6291992, 9213274, 18426548, 32246459, 36853096, 64492918, 128985836, 257971672]

約数ペア:

[(1, 257971672), (2, 128985836), (4, 64492918), (7, 36853096), (8, 32246459), (14, 18426548), (28, 9213274), (41, 6291992), (49, 5264728), (56, 4606637), (82, 3145996), (98, 2632364), (164, 1572998), (196, 1316182), (287, 898856), (328, 786499), (343, 752104), (392, 658091), (574, 449428), (686, 376052), (1148, 224714), (1372, 188026), (2009, 128408), (2293, 112504), (2296, 112357), (2744, 94013), (4018, 64204), (4586, 56252), (8036, 32102), (9172, 28126), (14063, 18344), (16051, 16072)]