1285565440

素因数分解:

$2^{10}\times 5^1\times {\mathrm{251087}}^1$

素因数の和:251112

約数の個数: 44

約数和(自身を含む): 3083862816

約数和(自身を除く): 1798297376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 251087, 502174, 1004348, 1255435, 2008696, 2510870, 4017392, 5021740, 8034784, 10043480, 16069568, 20086960, 32139136, 40173920, 64278272, 80347840, 128556544, 160695680, 257113088, 321391360, 642782720, 1285565440]

約数ペア:

[(1, 1285565440), (2, 642782720), (4, 321391360), (5, 257113088), (8, 160695680), (10, 128556544), (16, 80347840), (20, 64278272), (32, 40173920), (40, 32139136), (64, 20086960), (80, 16069568), (128, 10043480), (160, 8034784), (256, 5021740), (320, 4017392), (512, 2510870), (640, 2008696), (1024, 1255435), (1280, 1004348), (2560, 502174), (5120, 251087)]