21262210

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:498

約数の個数: 32

約数和(自身を含む): 39517632

約数和(自身を除く): 18255422

約数列:

[1, 2, 5, 10, 43, 86, 197, 215, 251, 394, 430, 502, 985, 1255, 1970, 2510, 8471, 10793, 16942, 21586, 42355, 49447, 53965, 84710, 98894, 107930, 247235, 494470, 2126221, 4252442, 10631105, 21262210]

約数ペア:

[(1, 21262210), (2, 10631105), (5, 4252442), (10, 2126221), (43, 494470), (86, 247235), (197, 107930), (215, 98894), (251, 84710), (394, 53965), (430, 49447), (502, 42355), (985, 21586), (1255, 16942), (1970, 10793), (2510, 8471)]