256399360

素因数分解:

$2^{11}\times 5^1\times 7^3\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 192

約数和(自身を含む): 727272000

約数和(自身を除く): 470872640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 73, 80, 98, 112, 128, 140, 146, 160, 196, 224, 245, 256, 280, 292, 320, 343, 365, 392, 448, 490, 511, 512, 560, 584, 640, 686, 730, 784, 896, 980, 1022, 1024, 1120, 1168, 1280, 1372, 1460, 1568, 1715, 1792, 1960, 2044, 2048, 2240, 2336, 2555, 2560, 2744, 2920, 3136, 3430, 3577, 3584, 3920, 4088, 4480, 4672, 5110, 5120, 5488, 5840, 6272, 6860, 7154, 7168, 7840, 8176, 8960, 9344, 10220, 10240, 10976, 11680, 12544, 13720, 14308, 14336, 15680, 16352, 17885, 17920, 18688, 20440, 21952, 23360, 25039, 25088, 27440, 28616, 31360, 32704, 35770, 35840, 37376, 40880, 43904, 46720, 50078, 50176, 54880, 57232, 62720, 65408, 71540, 71680, 74752, 81760, 87808, 93440, 100156, 100352, 109760, 114464, 125195, 125440, 130816, 143080, 149504, 163520, 175616, 186880, 200312, 219520, 228928, 250390, 250880, 261632, 286160, 327040, 351232, 373760, 400624, 439040, 457856, 500780, 501760, 523264, 572320, 654080, 702464, 747520, 801248, 878080, 915712, 1001560, 1046528, 1144640, 1308160, 1602496, 1756160, 1831424, 2003120, 2289280, 2616320, 3204992, 3512320, 3662848, 4006240, 4578560, 5232640, 6409984, 7325696, 8012480, 9157120, 12819968, 16024960, 18314240, 25639936, 32049920, 36628480, 51279872, 64099840, 128199680, 256399360]

約数ペア:

[(1, 256399360), (2, 128199680), (4, 64099840), (5, 51279872), (7, 36628480), (8, 32049920), (10, 25639936), (14, 18314240), (16, 16024960), (20, 12819968), (28, 9157120), (32, 8012480), (35, 7325696), (40, 6409984), (49, 5232640), (56, 4578560), (64, 4006240), (70, 3662848), (73, 3512320), (80, 3204992), (98, 2616320), (112, 2289280), (128, 2003120), (140, 1831424), (146, 1756160), (160, 1602496), (196, 1308160), (224, 1144640), (245, 1046528), (256, 1001560), (280, 915712), (292, 878080), (320, 801248), (343, 747520), (365, 702464), (392, 654080), (448, 572320), (490, 523264), (511, 501760), (512, 500780), (560, 457856), (584, 439040), (640, 400624), (686, 373760), (730, 351232), (784, 327040), (896, 286160), (980, 261632), (1022, 250880), (1024, 250390), (1120, 228928), (1168, 219520), (1280, 200312), (1372, 186880), (1460, 175616), (1568, 163520), (1715, 149504), (1792, 143080), (1960, 130816), (2044, 125440), (2048, 125195), (2240, 114464), (2336, 109760), (2555, 100352), (2560, 100156), (2744, 93440), (2920, 87808), (3136, 81760), (3430, 74752), (3577, 71680), (3584, 71540), (3920, 65408), (4088, 62720), (4480, 57232), (4672, 54880), (5110, 50176), (5120, 50078), (5488, 46720), (5840, 43904), (6272, 40880), (6860, 37376), (7154, 35840), (7168, 35770), (7840, 32704), (8176, 31360), (8960, 28616), (9344, 27440), (10220, 25088), (10240, 25039), (10976, 23360), (11680, 21952), (12544, 20440), (13720, 18688), (14308, 17920), (14336, 17885), (15680, 16352)]