260097920

素因数分解:

$2^7\times 5^1\times {\mathrm{406403}}^1$

素因数の和:406422

約数の個数: 32

約数和(自身を含む): 621798120

約数和(自身を除く): 361700200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 406403, 812806, 1625612, 2032015, 3251224, 4064030, 6502448, 8128060, 13004896, 16256120, 26009792, 32512240, 52019584, 65024480, 130048960, 260097920]

約数ペア:

[(1, 260097920), (2, 130048960), (4, 65024480), (5, 52019584), (8, 32512240), (10, 26009792), (16, 16256120), (20, 13004896), (32, 8128060), (40, 6502448), (64, 4064030), (80, 3251224), (128, 2032015), (160, 1625612), (320, 812806), (640, 406403)]