390913280

素因数分解:

$2^8\times 5^1\times {\mathrm{305401}}^1$

素因数の和:305422

約数の個数: 36

約数和(自身を含む): 936362532

約数和(自身を除く): 545449252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 305401, 610802, 1221604, 1527005, 2443208, 3054010, 4886416, 6108020, 9772832, 12216040, 19545664, 24432080, 39091328, 48864160, 78182656, 97728320, 195456640, 390913280]

約数ペア:

[(1, 390913280), (2, 195456640), (4, 97728320), (5, 78182656), (8, 48864160), (10, 39091328), (16, 24432080), (20, 19545664), (32, 12216040), (40, 9772832), (64, 6108020), (80, 4886416), (128, 3054010), (160, 2443208), (256, 1527005), (320, 1221604), (640, 610802), (1280, 305401)]