20519768

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{853}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 40172160

約数和(自身を除く): 19652392

約数列:

[1, 2, 4, 8, 31, 62, 97, 124, 194, 248, 388, 776, 853, 1706, 3007, 3412, 6014, 6824, 12028, 24056, 26443, 52886, 82741, 105772, 165482, 211544, 330964, 661928, 2564971, 5129942, 10259884, 20519768]

約数ペア:

[(1, 20519768), (2, 10259884), (4, 5129942), (8, 2564971), (31, 661928), (62, 330964), (97, 211544), (124, 165482), (194, 105772), (248, 82741), (388, 52886), (776, 26443), (853, 24056), (1706, 12028), (3007, 6824), (3412, 6014)]