248496640

素因数分解:

$2^9\times 5^1\times 7^3\times {\mathrm{283}}^1$

素因数の和:327

約数の個数: 160

約数和(自身を含む): 697276800

約数和(自身を除く): 448780160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 283, 320, 343, 392, 448, 490, 512, 560, 566, 640, 686, 784, 896, 980, 1120, 1132, 1280, 1372, 1415, 1568, 1715, 1792, 1960, 1981, 2240, 2264, 2560, 2744, 2830, 3136, 3430, 3584, 3920, 3962, 4480, 4528, 5488, 5660, 6272, 6860, 7840, 7924, 8960, 9056, 9905, 10976, 11320, 12544, 13720, 13867, 15680, 15848, 17920, 18112, 19810, 21952, 22640, 25088, 27440, 27734, 31360, 31696, 36224, 39620, 43904, 45280, 54880, 55468, 62720, 63392, 69335, 72448, 79240, 87808, 90560, 97069, 109760, 110936, 125440, 126784, 138670, 144896, 158480, 175616, 181120, 194138, 219520, 221872, 253568, 277340, 316960, 362240, 388276, 439040, 443744, 485345, 507136, 554680, 633920, 724480, 776552, 878080, 887488, 970690, 1014272, 1109360, 1267840, 1553104, 1774976, 1941380, 2218720, 2535680, 3106208, 3549952, 3882760, 4437440, 5071360, 6212416, 7099904, 7765520, 8874880, 12424832, 15531040, 17749760, 24849664, 31062080, 35499520, 49699328, 62124160, 124248320, 248496640]

約数ペア:

[(1, 248496640), (2, 124248320), (4, 62124160), (5, 49699328), (7, 35499520), (8, 31062080), (10, 24849664), (14, 17749760), (16, 15531040), (20, 12424832), (28, 8874880), (32, 7765520), (35, 7099904), (40, 6212416), (49, 5071360), (56, 4437440), (64, 3882760), (70, 3549952), (80, 3106208), (98, 2535680), (112, 2218720), (128, 1941380), (140, 1774976), (160, 1553104), (196, 1267840), (224, 1109360), (245, 1014272), (256, 970690), (280, 887488), (283, 878080), (320, 776552), (343, 724480), (392, 633920), (448, 554680), (490, 507136), (512, 485345), (560, 443744), (566, 439040), (640, 388276), (686, 362240), (784, 316960), (896, 277340), (980, 253568), (1120, 221872), (1132, 219520), (1280, 194138), (1372, 181120), (1415, 175616), (1568, 158480), (1715, 144896), (1792, 138670), (1960, 126784), (1981, 125440), (2240, 110936), (2264, 109760), (2560, 97069), (2744, 90560), (2830, 87808), (3136, 79240), (3430, 72448), (3584, 69335), (3920, 63392), (3962, 62720), (4480, 55468), (4528, 54880), (5488, 45280), (5660, 43904), (6272, 39620), (6860, 36224), (7840, 31696), (7924, 31360), (8960, 27734), (9056, 27440), (9905, 25088), (10976, 22640), (11320, 21952), (12544, 19810), (13720, 18112), (13867, 17920), (15680, 15848)]