205180920

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{81421}}^1$

素因数の和:81445

約数の個数: 96

約数和(自身を含む): 762109920

約数和(自身を除く): 556929000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 81421, 162842, 244263, 325684, 407105, 488526, 569947, 651368, 732789, 814210, 977052, 1139894, 1221315, 1465578, 1628420, 1709841, 1954104, 2279788, 2442630, 2849735, 2931156, 3256840, 3419682, 3663945, 4559576, 4885260, 5129523, 5699470, 5862312, 6839364, 7327890, 8549205, 9770520, 10259046, 11398940, 13678728, 14655780, 17098410, 20518092, 22797880, 25647615, 29311560, 34196820, 41036184, 51295230, 68393640, 102590460, 205180920]

約数ペア:

[(1, 205180920), (2, 102590460), (3, 68393640), (4, 51295230), (5, 41036184), (6, 34196820), (7, 29311560), (8, 25647615), (9, 22797880), (10, 20518092), (12, 17098410), (14, 14655780), (15, 13678728), (18, 11398940), (20, 10259046), (21, 9770520), (24, 8549205), (28, 7327890), (30, 6839364), (35, 5862312), (36, 5699470), (40, 5129523), (42, 4885260), (45, 4559576), (56, 3663945), (60, 3419682), (63, 3256840), (70, 2931156), (72, 2849735), (84, 2442630), (90, 2279788), (105, 1954104), (120, 1709841), (126, 1628420), (140, 1465578), (168, 1221315), (180, 1139894), (210, 977052), (252, 814210), (280, 732789), (315, 651368), (360, 569947), (420, 488526), (504, 407105), (630, 325684), (840, 244263), (1260, 162842), (2520, 81421)]