19047020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{991}}^1$

素因数の和:1062

約数の個数: 36

約数和(自身を含む): 41372352

約数和(自身を除く): 22325332

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 991, 1922, 1982, 3844, 3964, 4805, 4955, 9610, 9910, 19220, 19820, 30721, 61442, 122884, 153605, 307210, 614420, 952351, 1904702, 3809404, 4761755, 9523510, 19047020]

約数ペア:

[(1, 19047020), (2, 9523510), (4, 4761755), (5, 3809404), (10, 1904702), (20, 952351), (31, 614420), (62, 307210), (124, 153605), (155, 122884), (310, 61442), (620, 30721), (961, 19820), (991, 19220), (1922, 9910), (1982, 9610), (3844, 4955), (3964, 4805)]