812961280

素因数分解:

$2^9\times 5^1\times {\mathrm{317563}}^1$

素因数の和:317586

約数の個数: 40

約数和(自身を含む): 1949207832

約数和(自身を除く): 1136246552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 317563, 635126, 1270252, 1587815, 2540504, 3175630, 5081008, 6351260, 10162016, 12702520, 20324032, 25405040, 40648064, 50810080, 81296128, 101620160, 162592256, 203240320, 406480640, 812961280]

約数ペア:

[(1, 812961280), (2, 406480640), (4, 203240320), (5, 162592256), (8, 101620160), (10, 81296128), (16, 50810080), (20, 40648064), (32, 25405040), (40, 20324032), (64, 12702520), (80, 10162016), (128, 6351260), (160, 5081008), (256, 3175630), (320, 2540504), (512, 1587815), (640, 1270252), (1280, 635126), (2560, 317563)]