21481210

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{677}}^1$

素因数の和:870

約数の個数: 32

約数和(自身を含む): 41005440

約数和(自身を除く): 19524230

約数列:

[1, 2, 5, 10, 19, 38, 95, 167, 190, 334, 677, 835, 1354, 1670, 3173, 3385, 6346, 6770, 12863, 15865, 25726, 31730, 64315, 113059, 128630, 226118, 565295, 1130590, 2148121, 4296242, 10740605, 21481210]

約数ペア:

[(1, 21481210), (2, 10740605), (5, 4296242), (10, 2148121), (19, 1130590), (38, 565295), (95, 226118), (167, 128630), (190, 113059), (334, 64315), (677, 31730), (835, 25726), (1354, 15865), (1670, 12863), (3173, 6770), (3385, 6346)]