27978920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{6791}}^1$

素因数の和:6905

約数の個数: 32

約数和(自身を含む): 63573120

約数和(自身を除く): 35594200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 6791, 13582, 27164, 33955, 54328, 67910, 135820, 271640, 699473, 1398946, 2797892, 3497365, 5595784, 6994730, 13989460, 27978920]

約数ペア:

[(1, 27978920), (2, 13989460), (4, 6994730), (5, 5595784), (8, 3497365), (10, 2797892), (20, 1398946), (40, 699473), (103, 271640), (206, 135820), (412, 67910), (515, 54328), (824, 33955), (1030, 27164), (2060, 13582), (4120, 6791)]