642437880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40253}}^1$

素因数の和:40293

約数の個数: 128

約数和(自身を含む): 2318630400

約数和(自身を除く): 1676192520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 2280, 2660, 3192, 3990, 5320, 7980, 15960, 40253, 80506, 120759, 161012, 201265, 241518, 281771, 322024, 402530, 483036, 563542, 603795, 764807, 805060, 845313, 966072, 1127084, 1207590, 1408855, 1529614, 1610120, 1690626, 2254168, 2294421, 2415180, 2817710, 3059228, 3381252, 3824035, 4226565, 4588842, 4830360, 5353649, 5635420, 6118456, 6762504, 7648070, 8453130, 9177684, 10707298, 11270840, 11472105, 15296140, 16060947, 16906260, 18355368, 21414596, 22944210, 26768245, 30592280, 32121894, 33812520, 42829192, 45888420, 53536490, 64243788, 80304735, 91776840, 107072980, 128487576, 160609470, 214145960, 321218940, 642437880]

約数ペア:

[(1, 642437880), (2, 321218940), (3, 214145960), (4, 160609470), (5, 128487576), (6, 107072980), (7, 91776840), (8, 80304735), (10, 64243788), (12, 53536490), (14, 45888420), (15, 42829192), (19, 33812520), (20, 32121894), (21, 30592280), (24, 26768245), (28, 22944210), (30, 21414596), (35, 18355368), (38, 16906260), (40, 16060947), (42, 15296140), (56, 11472105), (57, 11270840), (60, 10707298), (70, 9177684), (76, 8453130), (84, 7648070), (95, 6762504), (105, 6118456), (114, 5635420), (120, 5353649), (133, 4830360), (140, 4588842), (152, 4226565), (168, 3824035), (190, 3381252), (210, 3059228), (228, 2817710), (266, 2415180), (280, 2294421), (285, 2254168), (380, 1690626), (399, 1610120), (420, 1529614), (456, 1408855), (532, 1207590), (570, 1127084), (665, 966072), (760, 845313), (798, 805060), (840, 764807), (1064, 603795), (1140, 563542), (1330, 483036), (1596, 402530), (1995, 322024), (2280, 281771), (2660, 241518), (3192, 201265), (3990, 161012), (5320, 120759), (7980, 80506), (15960, 40253)]