18906250

素因数分解:

$2^1\times 5^7\times {\mathrm{11}}^2$

素因数の和:59

約数の個数: 48

約数和(自身を含む): 38964744

約数和(自身を除く): 20058494

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 125, 242, 250, 275, 550, 605, 625, 1210, 1250, 1375, 2750, 3025, 3125, 6050, 6250, 6875, 13750, 15125, 15625, 30250, 31250, 34375, 68750, 75625, 78125, 151250, 156250, 171875, 343750, 378125, 756250, 859375, 1718750, 1890625, 3781250, 9453125, 18906250]

約数ペア:

[(1, 18906250), (2, 9453125), (5, 3781250), (10, 1890625), (11, 1718750), (22, 859375), (25, 756250), (50, 378125), (55, 343750), (110, 171875), (121, 156250), (125, 151250), (242, 78125), (250, 75625), (275, 68750), (550, 34375), (605, 31250), (625, 30250), (1210, 15625), (1250, 15125), (1375, 13750), (2750, 6875), (3025, 6250), (3125, 6050)]