21861860

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 25554460

約数列:

[1, 2, 4, 5, 10, 20, 59, 97, 118, 191, 194, 236, 295, 382, 388, 485, 590, 764, 955, 970, 1180, 1910, 1940, 3820, 5723, 11269, 11446, 18527, 22538, 22892, 28615, 37054, 45076, 56345, 57230, 74108, 92635, 112690, 114460, 185270, 225380, 370540, 1093093, 2186186, 4372372, 5465465, 10930930, 21861860]

約数ペア:

[(1, 21861860), (2, 10930930), (4, 5465465), (5, 4372372), (10, 2186186), (20, 1093093), (59, 370540), (97, 225380), (118, 185270), (191, 114460), (194, 112690), (236, 92635), (295, 74108), (382, 57230), (388, 56345), (485, 45076), (590, 37054), (764, 28615), (955, 22892), (970, 22538), (1180, 18527), (1910, 11446), (1940, 11269), (3820, 5723)]