399865088

素因数分解:

$2^8\times 7^2\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:408

約数の個数: 108

約数和(自身を含む): 939520512

約数和(自身を除く): 539655424

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 127, 128, 196, 224, 251, 254, 256, 392, 448, 502, 508, 784, 889, 896, 1004, 1016, 1568, 1757, 1778, 1792, 2008, 2032, 3136, 3514, 3556, 4016, 4064, 6223, 6272, 7028, 7112, 8032, 8128, 12299, 12446, 12544, 14056, 14224, 16064, 16256, 24598, 24892, 28112, 28448, 31877, 32128, 32512, 49196, 49784, 56224, 56896, 63754, 64256, 98392, 99568, 112448, 113792, 127508, 196784, 199136, 223139, 224896, 227584, 255016, 393568, 398272, 446278, 449792, 510032, 787136, 796544, 892556, 1020064, 1561973, 1574272, 1593088, 1785112, 2040128, 3123946, 3148544, 3570224, 4080256, 6247892, 7140448, 8160512, 12495784, 14280896, 24991568, 28561792, 49983136, 57123584, 99966272, 199932544, 399865088]

約数ペア:

[(1, 399865088), (2, 199932544), (4, 99966272), (7, 57123584), (8, 49983136), (14, 28561792), (16, 24991568), (28, 14280896), (32, 12495784), (49, 8160512), (56, 7140448), (64, 6247892), (98, 4080256), (112, 3570224), (127, 3148544), (128, 3123946), (196, 2040128), (224, 1785112), (251, 1593088), (254, 1574272), (256, 1561973), (392, 1020064), (448, 892556), (502, 796544), (508, 787136), (784, 510032), (889, 449792), (896, 446278), (1004, 398272), (1016, 393568), (1568, 255016), (1757, 227584), (1778, 224896), (1792, 223139), (2008, 199136), (2032, 196784), (3136, 127508), (3514, 113792), (3556, 112448), (4016, 99568), (4064, 98392), (6223, 64256), (6272, 63754), (7028, 56896), (7112, 56224), (8032, 49784), (8128, 49196), (12299, 32512), (12446, 32128), (12544, 31877), (14056, 28448), (14224, 28112), (16064, 24892), (16256, 24598)]