21815800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5741}}^1$

素因数の和:5776

約数の個数: 48

約数和(自身を含む): 53400600

約数和(自身を除く): 31584800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5741, 11482, 22964, 28705, 45928, 57410, 109079, 114820, 143525, 218158, 229640, 287050, 436316, 545395, 574100, 872632, 1090790, 1148200, 2181580, 2726975, 4363160, 5453950, 10907900, 21815800]

約数ペア:

[(1, 21815800), (2, 10907900), (4, 5453950), (5, 4363160), (8, 2726975), (10, 2181580), (19, 1148200), (20, 1090790), (25, 872632), (38, 574100), (40, 545395), (50, 436316), (76, 287050), (95, 229640), (100, 218158), (152, 143525), (190, 114820), (200, 109079), (380, 57410), (475, 45928), (760, 28705), (950, 22964), (1900, 11482), (3800, 5741)]