1229900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{251}}^1$

素因数の和:279

約数の個数: 54

約数和(自身を含む): 3116988

約数和(自身を除く): 1887088

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 251, 350, 490, 502, 700, 980, 1004, 1225, 1255, 1757, 2450, 2510, 3514, 4900, 5020, 6275, 7028, 8785, 12299, 12550, 17570, 24598, 25100, 35140, 43925, 49196, 61495, 87850, 122990, 175700, 245980, 307475, 614950, 1229900]

約数ペア:

[(1, 1229900), (2, 614950), (4, 307475), (5, 245980), (7, 175700), (10, 122990), (14, 87850), (20, 61495), (25, 49196), (28, 43925), (35, 35140), (49, 25100), (50, 24598), (70, 17570), (98, 12550), (100, 12299), (140, 8785), (175, 7028), (196, 6275), (245, 5020), (251, 4900), (350, 3514), (490, 2510), (502, 2450), (700, 1757), (980, 1255), (1004, 1225)]