12440978

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:634

約数の個数: 24

約数和(自身を含む): 20755980

約数和(自身を除く): 8315002

約数列:

[1, 2, 11, 22, 101, 121, 202, 242, 509, 1018, 1111, 2222, 5599, 11198, 12221, 24442, 51409, 61589, 102818, 123178, 565499, 1130998, 6220489, 12440978]

約数ペア:

[(1, 12440978), (2, 6220489), (11, 1130998), (22, 565499), (101, 123178), (121, 102818), (202, 61589), (242, 51409), (509, 24442), (1018, 12221), (1111, 11198), (2222, 5599)]