21356520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5741}}^1$

素因数の和:5786

約数の個数: 64

約数和(自身を含む): 66147840

約数和(自身を除く): 44791320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5741, 11482, 17223, 22964, 28705, 34446, 45928, 57410, 68892, 86115, 114820, 137784, 172230, 177971, 229640, 344460, 355942, 533913, 688920, 711884, 889855, 1067826, 1423768, 1779710, 2135652, 2669565, 3559420, 4271304, 5339130, 7118840, 10678260, 21356520]

約数ペア:

[(1, 21356520), (2, 10678260), (3, 7118840), (4, 5339130), (5, 4271304), (6, 3559420), (8, 2669565), (10, 2135652), (12, 1779710), (15, 1423768), (20, 1067826), (24, 889855), (30, 711884), (31, 688920), (40, 533913), (60, 355942), (62, 344460), (93, 229640), (120, 177971), (124, 172230), (155, 137784), (186, 114820), (248, 86115), (310, 68892), (372, 57410), (465, 45928), (620, 34446), (744, 28705), (930, 22964), (1240, 17223), (1860, 11482), (3720, 5741)]