18894920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42943}}^1$

素因数の和:42965

約数の個数: 32

約数和(自身を含む): 46379520

約数和(自身を除く): 27484600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42943, 85886, 171772, 214715, 343544, 429430, 472373, 858860, 944746, 1717720, 1889492, 2361865, 3778984, 4723730, 9447460, 18894920]

約数ペア:

[(1, 18894920), (2, 9447460), (4, 4723730), (5, 3778984), (8, 2361865), (10, 1889492), (11, 1717720), (20, 944746), (22, 858860), (40, 472373), (44, 429430), (55, 343544), (88, 214715), (110, 171772), (220, 85886), (440, 42943)]