20572400

素因数分解:

$2^4\times 5^2\times {\mathrm{51431}}^1$

素因数の和:51449

約数の個数: 30

約数和(自身を含む): 49426152

約数和(自身を除く): 28853752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 51431, 102862, 205724, 257155, 411448, 514310, 822896, 1028620, 1285775, 2057240, 2571550, 4114480, 5143100, 10286200, 20572400]

約数ペア:

[(1, 20572400), (2, 10286200), (4, 5143100), (5, 4114480), (8, 2571550), (10, 2057240), (16, 1285775), (20, 1028620), (25, 822896), (40, 514310), (50, 411448), (80, 257155), (100, 205724), (200, 102862), (400, 51431)]