28742780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130649}}^1$

素因数の和:130669

約数の個数: 24

約数和(自身を含む): 65847600

約数和(自身を除く): 37104820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 130649, 261298, 522596, 653245, 1306490, 1437139, 2612980, 2874278, 5748556, 7185695, 14371390, 28742780]

約数ペア:

[(1, 28742780), (2, 14371390), (4, 7185695), (5, 5748556), (10, 2874278), (11, 2612980), (20, 1437139), (22, 1306490), (44, 653245), (55, 522596), (110, 261298), (220, 130649)]