900800

素因数分解:

$2^6\times 5^2\times {\mathrm{563}}^1$

素因数の和:585

約数の個数: 42

約数和(自身を含む): 2220468

約数和(自身を除く): 1319668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 563, 800, 1126, 1600, 2252, 2815, 4504, 5630, 9008, 11260, 14075, 18016, 22520, 28150, 36032, 45040, 56300, 90080, 112600, 180160, 225200, 450400, 900800]

約数ペア:

[(1, 900800), (2, 450400), (4, 225200), (5, 180160), (8, 112600), (10, 90080), (16, 56300), (20, 45040), (25, 36032), (32, 28150), (40, 22520), (50, 18016), (64, 14075), (80, 11260), (100, 9008), (160, 5630), (200, 4504), (320, 2815), (400, 2252), (563, 1600), (800, 1126)]