1285757840

素因数分解:

$2^4\times 5^1\times {\mathrm{2591}}^1\times {\mathrm{6203}}^1$

素因数の和:8807

約数の個数: 40

約数和(自身を含む): 2991022848

約数和(自身を除く): 1705265008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2591, 5182, 6203, 10364, 12406, 12955, 20728, 24812, 25910, 31015, 41456, 49624, 51820, 62030, 99248, 103640, 124060, 207280, 248120, 496240, 16071973, 32143946, 64287892, 80359865, 128575784, 160719730, 257151568, 321439460, 642878920, 1285757840]

約数ペア:

[(1, 1285757840), (2, 642878920), (4, 321439460), (5, 257151568), (8, 160719730), (10, 128575784), (16, 80359865), (20, 64287892), (40, 32143946), (80, 16071973), (2591, 496240), (5182, 248120), (6203, 207280), (10364, 124060), (12406, 103640), (12955, 99248), (20728, 62030), (24812, 51820), (25910, 49624), (31015, 41456)]