19845990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{220511}}^1$

素因数の和:220524

約数の個数: 24

約数和(自身を含む): 51599808

約数和(自身を除く): 31753818

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 220511, 441022, 661533, 1102555, 1323066, 1984599, 2205110, 3307665, 3969198, 6615330, 9922995, 19845990]

約数ペア:

[(1, 19845990), (2, 9922995), (3, 6615330), (5, 3969198), (6, 3307665), (9, 2205110), (10, 1984599), (15, 1323066), (18, 1102555), (30, 661533), (45, 441022), (90, 220511)]