19898871

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 29164800

約数和(自身を除く): 9265929

約数列:

[1, 3, 19, 57, 59, 61, 97, 177, 183, 291, 1121, 1159, 1843, 3363, 3477, 3599, 5529, 5723, 5917, 10797, 17169, 17751, 68381, 108737, 112423, 205143, 326211, 337269, 349103, 1047309, 6632957, 19898871]

約数ペア:

[(1, 19898871), (3, 6632957), (19, 1047309), (57, 349103), (59, 337269), (61, 326211), (97, 205143), (177, 112423), (183, 108737), (291, 68381), (1121, 17751), (1159, 17169), (1843, 10797), (3363, 5917), (3477, 5723), (3599, 5529)]