15661061990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{31961351}}^1$

素因数の和:31961372

約数の個数: 24

約数和(自身を含む): 32792347152

約数和(自身を除く): 17131285162

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 31961351, 63922702, 159806755, 223729457, 319613510, 447458914, 1118647285, 1566106199, 2237294570, 3132212398, 7830530995, 15661061990]

約数ペア:

[(1, 15661061990), (2, 7830530995), (5, 3132212398), (7, 2237294570), (10, 1566106199), (14, 1118647285), (35, 447458914), (49, 319613510), (70, 223729457), (98, 159806755), (245, 63922702), (490, 31961351)]