21317600

素因数分解:

$2^5\times 5^2\times {\mathrm{26647}}^1$

素因数の和:26667

約数の個数: 36

約数和(自身を含む): 52043544

約数和(自身を除く): 30725944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 26647, 53294, 106588, 133235, 213176, 266470, 426352, 532940, 666175, 852704, 1065880, 1332350, 2131760, 2664700, 4263520, 5329400, 10658800, 21317600]

約数ペア:

[(1, 21317600), (2, 10658800), (4, 5329400), (5, 4263520), (8, 2664700), (10, 2131760), (16, 1332350), (20, 1065880), (25, 852704), (32, 666175), (40, 532940), (50, 426352), (80, 266470), (100, 213176), (160, 133235), (200, 106588), (400, 53294), (800, 26647)]