21838390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1399}}^1$

素因数の和:1636

約数の個数: 32

約数和(自身を含む): 45158400

約数和(自身を除く): 23320010

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 223, 446, 1115, 1399, 1561, 2230, 2798, 3122, 6995, 7805, 9793, 13990, 15610, 19586, 48965, 97930, 311977, 623954, 1559885, 2183839, 3119770, 4367678, 10919195, 21838390]

約数ペア:

[(1, 21838390), (2, 10919195), (5, 4367678), (7, 3119770), (10, 2183839), (14, 1559885), (35, 623954), (70, 311977), (223, 97930), (446, 48965), (1115, 19586), (1399, 15610), (1561, 13990), (2230, 9793), (2798, 7805), (3122, 6995)]