21305950

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4219}}^1$

素因数の和:4332

約数の個数: 24

約数和(自身を含む): 40030920

約数和(自身を除く): 18724970

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4219, 5050, 8438, 21095, 42190, 105475, 210950, 426119, 852238, 2130595, 4261190, 10652975, 21305950]

約数ペア:

[(1, 21305950), (2, 10652975), (5, 4261190), (10, 2130595), (25, 852238), (50, 426119), (101, 210950), (202, 105475), (505, 42190), (1010, 21095), (2525, 8438), (4219, 5050)]