18521020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{18899}}^1$

素因数の和:18922

約数の個数: 36

約数和(自身を含む): 45246600

約数和(自身を除く): 26725580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 18899, 37798, 75596, 94495, 132293, 188990, 264586, 377980, 529172, 661465, 926051, 1322930, 1852102, 2645860, 3704204, 4630255, 9260510, 18521020]

約数ペア:

[(1, 18521020), (2, 9260510), (4, 4630255), (5, 3704204), (7, 2645860), (10, 1852102), (14, 1322930), (20, 926051), (28, 661465), (35, 529172), (49, 377980), (70, 264586), (98, 188990), (140, 132293), (196, 94495), (245, 75596), (490, 37798), (980, 18899)]