1999809819

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{9929}}^1$

素因数の和:10104

約数の個数: 48

約数和(自身を含む): 3469939200

約数和(自身を除く): 1470129381

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 139, 161, 207, 417, 483, 973, 1251, 1449, 2919, 3197, 8757, 9591, 9929, 22379, 28773, 29787, 67137, 69503, 89361, 201411, 208509, 228367, 625527, 685101, 1380131, 1598569, 2055303, 4140393, 4795707, 9660917, 12421179, 14387121, 28982751, 31743013, 86948253, 95229039, 222201091, 285687117, 666603273, 1999809819]

約数ペア:

[(1, 1999809819), (3, 666603273), (7, 285687117), (9, 222201091), (21, 95229039), (23, 86948253), (63, 31743013), (69, 28982751), (139, 14387121), (161, 12421179), (207, 9660917), (417, 4795707), (483, 4140393), (973, 2055303), (1251, 1598569), (1449, 1380131), (2919, 685101), (3197, 625527), (8757, 228367), (9591, 208509), (9929, 201411), (22379, 89361), (28773, 69503), (29787, 67137)]