1640389985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{13151}}^1$

素因数の和:13289

約数の個数: 32

約数和(自身を含む): 2253726720

約数和(自身を除く): 613336735

約数列:

[1, 5, 13, 19, 65, 95, 101, 247, 505, 1235, 1313, 1919, 6565, 9595, 13151, 24947, 65755, 124735, 170963, 249869, 854815, 1249345, 1328251, 3248297, 6641255, 16241485, 17267263, 25236769, 86336315, 126183845, 328077997, 1640389985]

約数ペア:

[(1, 1640389985), (5, 328077997), (13, 126183845), (19, 86336315), (65, 25236769), (95, 17267263), (101, 16241485), (247, 6641255), (505, 3248297), (1235, 1328251), (1313, 1249345), (1919, 854815), (6565, 249869), (9595, 170963), (13151, 124735), (24947, 65755)]