20198800

素因数分解:

$2^4\times 5^2\times {\mathrm{50497}}^1$

素因数の和:50515

約数の個数: 30

約数和(自身を含む): 48528578

約数和(自身を除く): 28329778

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 50497, 100994, 201988, 252485, 403976, 504970, 807952, 1009940, 1262425, 2019880, 2524850, 4039760, 5049700, 10099400, 20198800]

約数ペア:

[(1, 20198800), (2, 10099400), (4, 5049700), (5, 4039760), (8, 2524850), (10, 2019880), (16, 1262425), (20, 1009940), (25, 807952), (40, 504970), (50, 403976), (80, 252485), (100, 201988), (200, 100994), (400, 50497)]