21728938

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 41674752

約数和(自身を除く): 19945814

約数列:

[1, 2, 7, 11, 14, 22, 77, 101, 121, 127, 154, 202, 242, 254, 707, 847, 889, 1111, 1397, 1414, 1694, 1778, 2222, 2794, 7777, 9779, 12221, 12827, 15367, 15554, 19558, 24442, 25654, 30734, 85547, 89789, 107569, 141097, 171094, 179578, 215138, 282194, 987679, 1552067, 1975358, 3104134, 10864469, 21728938]

約数ペア:

[(1, 21728938), (2, 10864469), (7, 3104134), (11, 1975358), (14, 1552067), (22, 987679), (77, 282194), (101, 215138), (121, 179578), (127, 171094), (154, 141097), (202, 107569), (242, 89789), (254, 85547), (707, 30734), (847, 25654), (889, 24442), (1111, 19558), (1397, 15554), (1414, 15367), (1694, 12827), (1778, 12221), (2222, 9779), (2794, 7777)]