30640640

素因数分解:

$2^9\times 5^1\times {\mathrm{11969}}^1$

素因数の和:11992

約数の個数: 40

約数和(自身を含む): 73471860

約数和(自身を除く): 42831220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 11969, 23938, 47876, 59845, 95752, 119690, 191504, 239380, 383008, 478760, 766016, 957520, 1532032, 1915040, 3064064, 3830080, 6128128, 7660160, 15320320, 30640640]

約数ペア:

[(1, 30640640), (2, 15320320), (4, 7660160), (5, 6128128), (8, 3830080), (10, 3064064), (16, 1915040), (20, 1532032), (32, 957520), (40, 766016), (64, 478760), (80, 383008), (128, 239380), (160, 191504), (256, 119690), (320, 95752), (512, 59845), (640, 47876), (1280, 23938), (2560, 11969)]