20281100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4139}}^1$

素因数の和:4167

約数の個数: 54

約数和(自身を含む): 51207660

約数和(自身を除く): 30926560

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4139, 4900, 8278, 16556, 20695, 28973, 41390, 57946, 82780, 103475, 115892, 144865, 202811, 206950, 289730, 405622, 413900, 579460, 724325, 811244, 1014055, 1448650, 2028110, 2897300, 4056220, 5070275, 10140550, 20281100]

約数ペア:

[(1, 20281100), (2, 10140550), (4, 5070275), (5, 4056220), (7, 2897300), (10, 2028110), (14, 1448650), (20, 1014055), (25, 811244), (28, 724325), (35, 579460), (49, 413900), (50, 405622), (70, 289730), (98, 206950), (100, 202811), (140, 144865), (175, 115892), (196, 103475), (245, 82780), (350, 57946), (490, 41390), (700, 28973), (980, 20695), (1225, 16556), (2450, 8278), (4139, 4900)]