19719909

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{991}}^1$

素因数の和:1078

約数の個数: 32

約数和(自身を含む): 32378880

約数和(自身を除く): 12658971

約数列:

[1, 3, 9, 11, 27, 33, 67, 99, 201, 297, 603, 737, 991, 1809, 2211, 2973, 6633, 8919, 10901, 19899, 26757, 32703, 66397, 98109, 199191, 294327, 597573, 730367, 1792719, 2191101, 6573303, 19719909]

約数ペア:

[(1, 19719909), (3, 6573303), (9, 2191101), (11, 1792719), (27, 730367), (33, 597573), (67, 294327), (99, 199191), (201, 98109), (297, 66397), (603, 32703), (737, 26757), (991, 19899), (1809, 10901), (2211, 8919), (2973, 6633)]