256486400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:306

約数の個数: 132

約数和(自身を含む): 653353272

約数和(自身を除く): 396866872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 64, 80, 86, 100, 128, 160, 172, 200, 215, 233, 256, 320, 344, 400, 430, 466, 512, 640, 688, 800, 860, 932, 1024, 1075, 1165, 1280, 1376, 1600, 1720, 1864, 2150, 2330, 2560, 2752, 3200, 3440, 3728, 4300, 4660, 5120, 5504, 5825, 6400, 6880, 7456, 8600, 9320, 10019, 11008, 11650, 12800, 13760, 14912, 17200, 18640, 20038, 22016, 23300, 25600, 27520, 29824, 34400, 37280, 40076, 44032, 46600, 50095, 55040, 59648, 68800, 74560, 80152, 93200, 100190, 110080, 119296, 137600, 149120, 160304, 186400, 200380, 220160, 238592, 250475, 275200, 298240, 320608, 372800, 400760, 500950, 550400, 596480, 641216, 745600, 801520, 1001900, 1100800, 1192960, 1282432, 1491200, 1603040, 2003800, 2564864, 2982400, 3206080, 4007600, 5129728, 5964800, 6412160, 8015200, 10259456, 12824320, 16030400, 25648640, 32060800, 51297280, 64121600, 128243200, 256486400]

約数ペア:

[(1, 256486400), (2, 128243200), (4, 64121600), (5, 51297280), (8, 32060800), (10, 25648640), (16, 16030400), (20, 12824320), (25, 10259456), (32, 8015200), (40, 6412160), (43, 5964800), (50, 5129728), (64, 4007600), (80, 3206080), (86, 2982400), (100, 2564864), (128, 2003800), (160, 1603040), (172, 1491200), (200, 1282432), (215, 1192960), (233, 1100800), (256, 1001900), (320, 801520), (344, 745600), (400, 641216), (430, 596480), (466, 550400), (512, 500950), (640, 400760), (688, 372800), (800, 320608), (860, 298240), (932, 275200), (1024, 250475), (1075, 238592), (1165, 220160), (1280, 200380), (1376, 186400), (1600, 160304), (1720, 149120), (1864, 137600), (2150, 119296), (2330, 110080), (2560, 100190), (2752, 93200), (3200, 80152), (3440, 74560), (3728, 68800), (4300, 59648), (4660, 55040), (5120, 50095), (5504, 46600), (5825, 44032), (6400, 40076), (6880, 37280), (7456, 34400), (8600, 29824), (9320, 27520), (10019, 25600), (11008, 23300), (11650, 22016), (12800, 20038), (13760, 18640), (14912, 17200)]