21700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1$

素因数の和:52

約数の個数: 36

約数和(自身を含む): 55552

約数和(自身を除く): 33852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 140, 155, 175, 217, 310, 350, 434, 620, 700, 775, 868, 1085, 1550, 2170, 3100, 4340, 5425, 10850, 21700]

約数ペア:

[(1, 21700), (2, 10850), (4, 5425), (5, 4340), (7, 3100), (10, 2170), (14, 1550), (20, 1085), (25, 868), (28, 775), (31, 700), (35, 620), (50, 434), (62, 350), (70, 310), (100, 217), (124, 175), (140, 155)]