450400

素因数分解:

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

素因数の和:583

約数の個数: 36

約数和(自身を含む): 1101492

約数和(自身を除く): 651092

約数列:

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

約数ペア:

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