19870980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331183}}^1$

素因数の和:331195

約数の個数: 24

約数和(自身を含む): 55638912

約数和(自身を除く): 35767932

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331183, 662366, 993549, 1324732, 1655915, 1987098, 3311830, 3974196, 4967745, 6623660, 9935490, 19870980]

約数ペア:

[(1, 19870980), (2, 9935490), (3, 6623660), (4, 4967745), (5, 3974196), (6, 3311830), (10, 1987098), (12, 1655915), (15, 1324732), (20, 993549), (30, 662366), (60, 331183)]