21078954

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{10009}}^1$

素因数の和:10036

約数の個数: 40

約数和(自身を含む): 50870820

約数和(自身を除く): 29791866

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 351, 702, 1053, 2106, 10009, 20018, 30027, 60054, 90081, 130117, 180162, 260234, 270243, 390351, 540486, 780702, 810729, 1171053, 1621458, 2342106, 3513159, 7026318, 10539477, 21078954]

約数ペア:

[(1, 21078954), (2, 10539477), (3, 7026318), (6, 3513159), (9, 2342106), (13, 1621458), (18, 1171053), (26, 810729), (27, 780702), (39, 540486), (54, 390351), (78, 270243), (81, 260234), (117, 180162), (162, 130117), (234, 90081), (351, 60054), (702, 30027), (1053, 20018), (2106, 10009)]