2565940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 5927040

約数和(自身を除く): 3361100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 139, 142, 260, 278, 284, 355, 556, 695, 710, 923, 1390, 1420, 1807, 1846, 2780, 3614, 3692, 4615, 7228, 9035, 9230, 9869, 18070, 18460, 19738, 36140, 39476, 49345, 98690, 128297, 197380, 256594, 513188, 641485, 1282970, 2565940]

約数ペア:

[(1, 2565940), (2, 1282970), (4, 641485), (5, 513188), (10, 256594), (13, 197380), (20, 128297), (26, 98690), (52, 49345), (65, 39476), (71, 36140), (130, 19738), (139, 18460), (142, 18070), (260, 9869), (278, 9230), (284, 9035), (355, 7228), (556, 4615), (695, 3692), (710, 3614), (923, 2780), (1390, 1846), (1420, 1807)]