1955149720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{688433}}^1$

素因数の和:688515

約数の個数: 32

約数和(自身を含む): 4461052320

約数和(自身を除く): 2505902600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 688433, 1376866, 2753732, 3442165, 5507464, 6884330, 13768660, 27537320, 48878743, 97757486, 195514972, 244393715, 391029944, 488787430, 977574860, 1955149720]

約数ペア:

[(1, 1955149720), (2, 977574860), (4, 488787430), (5, 391029944), (8, 244393715), (10, 195514972), (20, 97757486), (40, 48878743), (71, 27537320), (142, 13768660), (284, 6884330), (355, 5507464), (568, 3442165), (710, 2753732), (1420, 1376866), (2840, 688433)]