20851460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21277}}^1$

素因数の和:21300

約数の個数: 36

約数和(自身を含む): 50939532

約数和(自身を除く): 30088072

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21277, 42554, 85108, 106385, 148939, 212770, 297878, 425540, 595756, 744695, 1042573, 1489390, 2085146, 2978780, 4170292, 5212865, 10425730, 20851460]

約数ペア:

[(1, 20851460), (2, 10425730), (4, 5212865), (5, 4170292), (7, 2978780), (10, 2085146), (14, 1489390), (20, 1042573), (28, 744695), (35, 595756), (49, 425540), (70, 297878), (98, 212770), (140, 148939), (196, 106385), (245, 85108), (490, 42554), (980, 21277)]