20210257431

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{907}}^1\times {\mathrm{3023}}^1$

素因数の和:3962

約数の個数: 80

約数和(自身を含む): 37210973184

約数和(自身を除く): 17000715753

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 907, 1053, 2457, 2721, 3023, 6349, 7371, 8163, 9069, 11791, 19047, 21161, 24489, 27207, 35373, 39299, 57141, 63483, 73467, 81621, 82537, 106119, 117897, 171423, 190449, 244863, 247611, 275093, 318357, 353691, 514269, 571347, 742833, 825279, 955071, 1061073, 1714041, 2228499, 2475837, 2741861, 3183219, 6685497, 7427511, 8225583, 19193027, 22282533, 24676749, 35644193, 57579081, 74030247, 106932579, 172737243, 222090741, 249509351, 320797737, 518211729, 748528053, 962393211, 1554635187, 2245584159, 2887179633, 6736752477, 20210257431]

約数ペア:

[(1, 20210257431), (3, 6736752477), (7, 2887179633), (9, 2245584159), (13, 1554635187), (21, 962393211), (27, 748528053), (39, 518211729), (63, 320797737), (81, 249509351), (91, 222090741), (117, 172737243), (189, 106932579), (273, 74030247), (351, 57579081), (567, 35644193), (819, 24676749), (907, 22282533), (1053, 19193027), (2457, 8225583), (2721, 7427511), (3023, 6685497), (6349, 3183219), (7371, 2741861), (8163, 2475837), (9069, 2228499), (11791, 1714041), (19047, 1061073), (21161, 955071), (24489, 825279), (27207, 742833), (35373, 571347), (39299, 514269), (57141, 353691), (63483, 318357), (73467, 275093), (81621, 247611), (82537, 244863), (106119, 190449), (117897, 171423)]