21167177275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{353}}^1\times {\mathrm{709}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 28049544000

約数和(自身を除く): 6882366725

約数列:

[1, 5, 17, 25, 85, 199, 353, 425, 709, 995, 1765, 3383, 3545, 4975, 6001, 8825, 12053, 16915, 17725, 30005, 60265, 70247, 84575, 141091, 150025, 250277, 301325, 351235, 705455, 1194199, 1251385, 1756175, 2398547, 3527275, 4254709, 5970995, 6256925, 11992735, 21273545, 29854975, 49805123, 59963675, 106367725, 249025615, 846687091, 1245128075, 4233435455, 21167177275]

約数ペア:

[(1, 21167177275), (5, 4233435455), (17, 1245128075), (25, 846687091), (85, 249025615), (199, 106367725), (353, 59963675), (425, 49805123), (709, 29854975), (995, 21273545), (1765, 11992735), (3383, 6256925), (3545, 5970995), (4975, 4254709), (6001, 3527275), (8825, 2398547), (12053, 1756175), (16915, 1251385), (17725, 1194199), (30005, 705455), (60265, 351235), (70247, 301325), (84575, 250277), (141091, 150025)]