19728460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{269}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 43999200

約数和(自身を除く): 24270740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 193, 269, 380, 386, 538, 772, 965, 1076, 1345, 1930, 2690, 3667, 3860, 5111, 5380, 7334, 10222, 14668, 18335, 20444, 25555, 36670, 51110, 51917, 73340, 102220, 103834, 207668, 259585, 519170, 986423, 1038340, 1972846, 3945692, 4932115, 9864230, 19728460]

約数ペア:

[(1, 19728460), (2, 9864230), (4, 4932115), (5, 3945692), (10, 1972846), (19, 1038340), (20, 986423), (38, 519170), (76, 259585), (95, 207668), (190, 103834), (193, 102220), (269, 73340), (380, 51917), (386, 51110), (538, 36670), (772, 25555), (965, 20444), (1076, 18335), (1345, 14668), (1930, 10222), (2690, 7334), (3667, 5380), (3860, 5111)]