20906840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27509}}^1$

素因数の和:27539

約数の個数: 32

約数和(自身を含む): 49518000

約数和(自身を除く): 28611160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27509, 55018, 110036, 137545, 220072, 275090, 522671, 550180, 1045342, 1100360, 2090684, 2613355, 4181368, 5226710, 10453420, 20906840]

約数ペア:

[(1, 20906840), (2, 10453420), (4, 5226710), (5, 4181368), (8, 2613355), (10, 2090684), (19, 1100360), (20, 1045342), (38, 550180), (40, 522671), (76, 275090), (95, 220072), (152, 137545), (190, 110036), (380, 55018), (760, 27509)]