20538216

素因数分解:

$2^3\times 3^2\times {\mathrm{109}}^1\times {\mathrm{2617}}^1$

素因数の和:2738

約数の個数: 48

約数和(自身を含む): 56156100

約数和(自身を除く): 35617884

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 109, 218, 327, 436, 654, 872, 981, 1308, 1962, 2616, 2617, 3924, 5234, 7848, 7851, 10468, 15702, 20936, 23553, 31404, 47106, 62808, 94212, 188424, 285253, 570506, 855759, 1141012, 1711518, 2282024, 2567277, 3423036, 5134554, 6846072, 10269108, 20538216]

約数ペア:

[(1, 20538216), (2, 10269108), (3, 6846072), (4, 5134554), (6, 3423036), (8, 2567277), (9, 2282024), (12, 1711518), (18, 1141012), (24, 855759), (36, 570506), (72, 285253), (109, 188424), (218, 94212), (327, 62808), (436, 47106), (654, 31404), (872, 23553), (981, 20936), (1308, 15702), (1962, 10468), (2616, 7851), (2617, 7848), (3924, 5234)]