215938900

素因数分解:

$2^2\times 5^2\times {\mathrm{991}}^1\times {\mathrm{2179}}^1$

素因数の和:3184

約数の個数: 36

約数和(自身を含む): 469275520

約数和(自身を除く): 253336620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 991, 1982, 2179, 3964, 4358, 4955, 8716, 9910, 10895, 19820, 21790, 24775, 43580, 49550, 54475, 99100, 108950, 217900, 2159389, 4318778, 8637556, 10796945, 21593890, 43187780, 53984725, 107969450, 215938900]

約数ペア:

[(1, 215938900), (2, 107969450), (4, 53984725), (5, 43187780), (10, 21593890), (20, 10796945), (25, 8637556), (50, 4318778), (100, 2159389), (991, 217900), (1982, 108950), (2179, 99100), (3964, 54475), (4358, 49550), (4955, 43580), (8716, 24775), (9910, 21790), (10895, 19820)]