28419380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1279}}^1$

素因数の和:1400

約数の個数: 48

約数和(自身を含む): 65802240

約数和(自身を除く): 37382860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 1279, 2020, 2222, 2558, 4444, 5116, 5555, 6395, 11110, 12790, 14069, 22220, 25580, 28138, 56276, 70345, 129179, 140690, 258358, 281380, 516716, 645895, 1291790, 1420969, 2583580, 2841938, 5683876, 7104845, 14209690, 28419380]

約数ペア:

[(1, 28419380), (2, 14209690), (4, 7104845), (5, 5683876), (10, 2841938), (11, 2583580), (20, 1420969), (22, 1291790), (44, 645895), (55, 516716), (101, 281380), (110, 258358), (202, 140690), (220, 129179), (404, 70345), (505, 56276), (1010, 28138), (1111, 25580), (1279, 22220), (2020, 14069), (2222, 12790), (2558, 11110), (4444, 6395), (5116, 5555)]