21998950

素因数分解:

$2^1\times 5^2\times {\mathrm{223}}^1\times {\mathrm{1973}}^1$

素因数の和:2208

約数の個数: 24

約数和(自身を含む): 41122368

約数和(自身を除く): 19123418

約数列:

[1, 2, 5, 10, 25, 50, 223, 446, 1115, 1973, 2230, 3946, 5575, 9865, 11150, 19730, 49325, 98650, 439979, 879958, 2199895, 4399790, 10999475, 21998950]

約数ペア:

[(1, 21998950), (2, 10999475), (5, 4399790), (10, 2199895), (25, 879958), (50, 439979), (223, 98650), (446, 49325), (1115, 19730), (1973, 11150), (2230, 9865), (3946, 5575)]