90552890

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 165623184

約数和(自身を除く): 75070294

約数列:

[1, 2, 5, 10, 137, 157, 274, 314, 421, 685, 785, 842, 1370, 1570, 2105, 4210, 21509, 43018, 57677, 66097, 107545, 115354, 132194, 215090, 288385, 330485, 576770, 660970, 9055289, 18110578, 45276445, 90552890]

約数ペア:

[(1, 90552890), (2, 45276445), (5, 18110578), (10, 9055289), (137, 660970), (157, 576770), (274, 330485), (314, 288385), (421, 215090), (685, 132194), (785, 115354), (842, 107545), (1370, 66097), (1570, 57677), (2105, 43018), (4210, 21509)]