638541568

素因数分解:

$2^8\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1021}}^1$

素因数の和:1393

約数の個数: 72

約数和(自身を含む): 1462277600

約数和(自身を除く): 823736032

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 349, 448, 698, 896, 1021, 1396, 1792, 2042, 2443, 2792, 4084, 4886, 5584, 7147, 8168, 9772, 11168, 14294, 16336, 19544, 22336, 28588, 32672, 39088, 44672, 57176, 65344, 78176, 89344, 114352, 130688, 156352, 228704, 261376, 312704, 356329, 457408, 625408, 712658, 914816, 1425316, 1829632, 2494303, 2850632, 4988606, 5701264, 9977212, 11402528, 19954424, 22805056, 39908848, 45610112, 79817696, 91220224, 159635392, 319270784, 638541568]

約数ペア:

[(1, 638541568), (2, 319270784), (4, 159635392), (7, 91220224), (8, 79817696), (14, 45610112), (16, 39908848), (28, 22805056), (32, 19954424), (56, 11402528), (64, 9977212), (112, 5701264), (128, 4988606), (224, 2850632), (256, 2494303), (349, 1829632), (448, 1425316), (698, 914816), (896, 712658), (1021, 625408), (1396, 457408), (1792, 356329), (2042, 312704), (2443, 261376), (2792, 228704), (4084, 156352), (4886, 130688), (5584, 114352), (7147, 89344), (8168, 78176), (9772, 65344), (11168, 57176), (14294, 44672), (16336, 39088), (19544, 32672), (22336, 28588)]