21978091521

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{57713}}^1$

素因数の和:57886

約数の個数: 48

約数和(自身を含む): 35653400640

約数和(自身を除く): 13675309119

約数列:

[1, 3, 9, 17, 19, 51, 57, 131, 153, 171, 323, 393, 969, 1179, 2227, 2489, 2907, 6681, 7467, 20043, 22401, 42313, 57713, 126939, 173139, 380817, 519417, 981121, 1096547, 2943363, 3289641, 7560403, 8830089, 9868923, 18641299, 22681209, 55923897, 68043627, 128526851, 143647657, 167771691, 385580553, 430942971, 1156741659, 1292828913, 2442010169, 7326030507, 21978091521]

約数ペア:

[(1, 21978091521), (3, 7326030507), (9, 2442010169), (17, 1292828913), (19, 1156741659), (51, 430942971), (57, 385580553), (131, 167771691), (153, 143647657), (171, 128526851), (323, 68043627), (393, 55923897), (969, 22681209), (1179, 18641299), (2227, 9868923), (2489, 8830089), (2907, 7560403), (6681, 3289641), (7467, 2943363), (20043, 1096547), (22401, 981121), (42313, 519417), (57713, 380817), (126939, 173139)]