81122990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{2749}}^1$

素因数の和:2996

約数の個数: 32

約数和(自身を含む): 158004000

約数和(自身を除く): 76881010

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 227, 454, 1135, 2270, 2749, 2951, 5498, 5902, 13745, 14755, 27490, 29510, 35737, 71474, 178685, 357370, 624023, 1248046, 3120115, 6240230, 8112299, 16224598, 40561495, 81122990]

約数ペア:

[(1, 81122990), (2, 40561495), (5, 16224598), (10, 8112299), (13, 6240230), (26, 3120115), (65, 1248046), (130, 624023), (227, 357370), (454, 178685), (1135, 71474), (2270, 35737), (2749, 29510), (2951, 27490), (5498, 14755), (5902, 13745)]