31368981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2711}}^1$

素因数の和:2769

約数の個数: 32

約数和(自身を含む): 52070400

約数和(自身を除く): 20701419

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 2711, 3857, 8133, 11571, 18977, 51509, 56931, 78619, 154527, 235857, 360563, 550333, 1081689, 1493761, 1650999, 4481283, 10456327, 31368981]

約数ペア:

[(1, 31368981), (3, 10456327), (7, 4481283), (19, 1650999), (21, 1493761), (29, 1081689), (57, 550333), (87, 360563), (133, 235857), (203, 154527), (399, 78619), (551, 56931), (609, 51509), (1653, 18977), (2711, 11571), (3857, 8133)]