20580451521

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{281}}^1\times {\mathrm{9661}}^1$

素因数の和:9990

約数の個数: 48

約数和(自身を含む): 33219347328

約数和(自身を除く): 12638895807

約数列:

[1, 3, 7, 19, 21, 57, 133, 281, 361, 399, 843, 1083, 1967, 2527, 5339, 5901, 7581, 9661, 16017, 28983, 37373, 67627, 101441, 112119, 183559, 202881, 304323, 550677, 710087, 1284913, 2130261, 2714741, 3487621, 3854739, 8144223, 10462863, 19003187, 24413347, 51580079, 57009561, 73240041, 154740237, 361060553, 980021501, 1083181659, 2940064503, 6860150507, 20580451521]

約数ペア:

[(1, 20580451521), (3, 6860150507), (7, 2940064503), (19, 1083181659), (21, 980021501), (57, 361060553), (133, 154740237), (281, 73240041), (361, 57009561), (399, 51580079), (843, 24413347), (1083, 19003187), (1967, 10462863), (2527, 8144223), (5339, 3854739), (5901, 3487621), (7581, 2714741), (9661, 2130261), (16017, 1284913), (28983, 710087), (37373, 550677), (67627, 304323), (101441, 202881), (112119, 183559)]