19920920

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1427}}^1$

素因数の和:1787

約数の個数: 32

約数和(自身を含む): 44982000

約数和(自身を除く): 25061080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1427, 1745, 2792, 2854, 3490, 5708, 6980, 7135, 11416, 13960, 14270, 28540, 57080, 498023, 996046, 1992092, 2490115, 3984184, 4980230, 9960460, 19920920]

約数ペア:

[(1, 19920920), (2, 9960460), (4, 4980230), (5, 3984184), (8, 2490115), (10, 1992092), (20, 996046), (40, 498023), (349, 57080), (698, 28540), (1396, 14270), (1427, 13960), (1745, 11416), (2792, 7135), (2854, 6980), (3490, 5708)]