20731492705

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{223}}^1$

素因数の和:515

約数の個数: 128

約数和(自身を含む): 33443020800

約数和(自身を除く): 12711528095

約数列:

[1, 5, 7, 11, 19, 35, 55, 71, 77, 95, 133, 179, 209, 223, 355, 385, 497, 665, 781, 895, 1045, 1115, 1253, 1349, 1463, 1561, 1969, 2453, 2485, 3401, 3905, 4237, 5467, 6265, 6745, 7315, 7805, 9443, 9845, 12265, 12709, 13783, 14839, 15833, 17005, 17171, 21185, 23807, 27335, 29659, 37411, 39917, 46607, 47215, 63545, 68915, 74195, 79165, 85855, 88963, 103873, 110831, 119035, 139799, 148295, 174163, 187055, 199585, 233035, 241471, 261877, 279419, 300827, 326249, 439087, 444815, 519365, 554155, 698995, 758423, 870815, 978593, 1207355, 1219141, 1309385, 1397095, 1504135, 1631245, 1690297, 2105789, 2195435, 2656181, 2834107, 3073609, 3309097, 3792115, 4892965, 5308961, 6095705, 8342653, 8451485, 10528945, 13280905, 14170535, 15368045, 16545485, 18593267, 19838749, 23163679, 26544805, 31175177, 41713265, 53848033, 58398571, 92966335, 99193745, 115818395, 155875885, 218226239, 269240165, 291992855, 376936231, 592328363, 1091131195, 1884681155, 2961641815, 4146298541, 20731492705]

約数ペア:

[(1, 20731492705), (5, 4146298541), (7, 2961641815), (11, 1884681155), (19, 1091131195), (35, 592328363), (55, 376936231), (71, 291992855), (77, 269240165), (95, 218226239), (133, 155875885), (179, 115818395), (209, 99193745), (223, 92966335), (355, 58398571), (385, 53848033), (497, 41713265), (665, 31175177), (781, 26544805), (895, 23163679), (1045, 19838749), (1115, 18593267), (1253, 16545485), (1349, 15368045), (1463, 14170535), (1561, 13280905), (1969, 10528945), (2453, 8451485), (2485, 8342653), (3401, 6095705), (3905, 5308961), (4237, 4892965), (5467, 3792115), (6265, 3309097), (6745, 3073609), (7315, 2834107), (7805, 2656181), (9443, 2195435), (9845, 2105789), (12265, 1690297), (12709, 1631245), (13783, 1504135), (14839, 1397095), (15833, 1309385), (17005, 1219141), (17171, 1207355), (21185, 978593), (23807, 870815), (27335, 758423), (29659, 698995), (37411, 554155), (39917, 519365), (46607, 444815), (47215, 439087), (63545, 326249), (68915, 300827), (74195, 279419), (79165, 261877), (85855, 241471), (88963, 233035), (103873, 199585), (110831, 187055), (119035, 174163), (139799, 148295)]