19808955

素因数分解:

$3^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{829}}^1$

素因数の和:905

約数の個数: 40

約数和(自身を含む): 36154800

約数和(自身を除く): 16345845

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 81, 135, 177, 295, 405, 531, 829, 885, 1593, 2487, 2655, 4145, 4779, 7461, 7965, 12435, 22383, 23895, 37305, 48911, 67149, 111915, 146733, 244555, 335745, 440199, 733665, 1320597, 2200995, 3961791, 6602985, 19808955]

約数ペア:

[(1, 19808955), (3, 6602985), (5, 3961791), (9, 2200995), (15, 1320597), (27, 733665), (45, 440199), (59, 335745), (81, 244555), (135, 146733), (177, 111915), (295, 67149), (405, 48911), (531, 37305), (829, 23895), (885, 22383), (1593, 12435), (2487, 7965), (2655, 7461), (4145, 4779)]