19355980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19751}}^1$

素因数の和:19774

約数の個数: 36

約数和(自身を含む): 47286288

約数和(自身を除く): 27930308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 19751, 39502, 79004, 98755, 138257, 197510, 276514, 395020, 553028, 691285, 967799, 1382570, 1935598, 2765140, 3871196, 4838995, 9677990, 19355980]

約数ペア:

[(1, 19355980), (2, 9677990), (4, 4838995), (5, 3871196), (7, 2765140), (10, 1935598), (14, 1382570), (20, 967799), (28, 691285), (35, 553028), (49, 395020), (70, 276514), (98, 197510), (140, 138257), (196, 98755), (245, 79004), (490, 39502), (980, 19751)]