84931780

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 181762560

約数和(自身を除く): 96830780

約数列:

[1, 2, 4, 5, 10, 20, 137, 139, 223, 274, 278, 446, 548, 556, 685, 695, 892, 1115, 1370, 1390, 2230, 2740, 2780, 4460, 19043, 30551, 30997, 38086, 61102, 61994, 76172, 95215, 122204, 123988, 152755, 154985, 190430, 305510, 309970, 380860, 611020, 619940, 4246589, 8493178, 16986356, 21232945, 42465890, 84931780]

約数ペア:

[(1, 84931780), (2, 42465890), (4, 21232945), (5, 16986356), (10, 8493178), (20, 4246589), (137, 619940), (139, 611020), (223, 380860), (274, 309970), (278, 305510), (446, 190430), (548, 154985), (556, 152755), (685, 123988), (695, 122204), (892, 95215), (1115, 76172), (1370, 61994), (1390, 61102), (2230, 38086), (2740, 30997), (2780, 30551), (4460, 19043)]