19801810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{619}}^1$

素因数の和:1090

約数の個数: 32

約数和(自身を含む): 40890240

約数和(自身を除く): 21088430

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 457, 619, 914, 1238, 2285, 3095, 3199, 4333, 4570, 6190, 6398, 8666, 15995, 21665, 31990, 43330, 282883, 565766, 1414415, 1980181, 2828830, 3960362, 9900905, 19801810]

約数ペア:

[(1, 19801810), (2, 9900905), (5, 3960362), (7, 2828830), (10, 1980181), (14, 1414415), (35, 565766), (70, 282883), (457, 43330), (619, 31990), (914, 21665), (1238, 15995), (2285, 8666), (3095, 6398), (3199, 6190), (4333, 4570)]