19977573

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{439}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 13476507

約数列:

[1, 3, 7, 11, 21, 33, 77, 197, 231, 439, 591, 1317, 1379, 2167, 3073, 4137, 4829, 6501, 9219, 14487, 15169, 33803, 45507, 86483, 101409, 259449, 605381, 951313, 1816143, 2853939, 6659191, 19977573]

約数ペア:

[(1, 19977573), (3, 6659191), (7, 2853939), (11, 1816143), (21, 951313), (33, 605381), (77, 259449), (197, 101409), (231, 86483), (439, 45507), (591, 33803), (1317, 15169), (1379, 14487), (2167, 9219), (3073, 6501), (4137, 4829)]