19907811

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1296

約数の個数: 48

約数和(自身を含む): 37440000

約数和(自身を除く): 17532189

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1249, 1449, 1771, 2277, 3747, 5313, 8743, 11241, 13739, 15939, 26229, 28727, 41217, 78687, 86181, 96173, 123651, 201089, 258543, 288519, 315997, 603267, 865557, 947991, 1809801, 2211979, 2843973, 6635937, 19907811]

約数ペア:

[(1, 19907811), (3, 6635937), (7, 2843973), (9, 2211979), (11, 1809801), (21, 947991), (23, 865557), (33, 603267), (63, 315997), (69, 288519), (77, 258543), (99, 201089), (161, 123651), (207, 96173), (231, 86181), (253, 78687), (483, 41217), (693, 28727), (759, 26229), (1249, 15939), (1449, 13739), (1771, 11241), (2277, 8743), (3747, 5313)]