31393880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{112121}}^1$

素因数の和:112139

約数の個数: 32

約数和(自身を含む): 80727840

約数和(自身を除く): 49333960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 112121, 224242, 448484, 560605, 784847, 896968, 1121210, 1569694, 2242420, 3139388, 3924235, 4484840, 6278776, 7848470, 15696940, 31393880]

約数ペア:

[(1, 31393880), (2, 15696940), (4, 7848470), (5, 6278776), (7, 4484840), (8, 3924235), (10, 3139388), (14, 2242420), (20, 1569694), (28, 1121210), (35, 896968), (40, 784847), (56, 560605), (70, 448484), (140, 224242), (280, 112121)]