257457760

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{32839}}^1$

素因数の和:32868

約数の個数: 72

約数和(自身を含む): 707570640

約数和(自身を除く): 450112880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 32839, 65678, 131356, 164195, 229873, 262712, 328390, 459746, 525424, 656780, 919492, 1050848, 1149365, 1313560, 1609111, 1838984, 2298730, 2627120, 3218222, 3677968, 4597460, 5254240, 6436444, 7355936, 8045555, 9194920, 12872888, 16091110, 18389840, 25745776, 32182220, 36779680, 51491552, 64364440, 128728880, 257457760]

約数ペア:

[(1, 257457760), (2, 128728880), (4, 64364440), (5, 51491552), (7, 36779680), (8, 32182220), (10, 25745776), (14, 18389840), (16, 16091110), (20, 12872888), (28, 9194920), (32, 8045555), (35, 7355936), (40, 6436444), (49, 5254240), (56, 4597460), (70, 3677968), (80, 3218222), (98, 2627120), (112, 2298730), (140, 1838984), (160, 1609111), (196, 1313560), (224, 1149365), (245, 1050848), (280, 919492), (392, 656780), (490, 525424), (560, 459746), (784, 328390), (980, 262712), (1120, 229873), (1568, 164195), (1960, 131356), (3920, 65678), (7840, 32839)]