2190640

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:349

約数の個数: 40

約数和(自身を含む): 5155920

約数和(自身を除く): 2965280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 197, 278, 394, 556, 695, 788, 985, 1112, 1390, 1576, 1970, 2224, 2780, 3152, 3940, 5560, 7880, 11120, 15760, 27383, 54766, 109532, 136915, 219064, 273830, 438128, 547660, 1095320, 2190640]

約数ペア:

[(1, 2190640), (2, 1095320), (4, 547660), (5, 438128), (8, 273830), (10, 219064), (16, 136915), (20, 109532), (40, 54766), (80, 27383), (139, 15760), (197, 11120), (278, 7880), (394, 5560), (556, 3940), (695, 3152), (788, 2780), (985, 2224), (1112, 1970), (1390, 1576)]