1399427840

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17923}}^1$

素因数の和:18005

約数の個数: 72

約数和(自身を含む): 3407209008

約数和(自身を除く): 2007781168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 3904, 4880, 7808, 9760, 15616, 17923, 19520, 35846, 39040, 71692, 78080, 89615, 143384, 179230, 286768, 358460, 573536, 716920, 1093303, 1147072, 1433840, 2186606, 2294144, 2867680, 4373212, 4588288, 5466515, 5735360, 8746424, 10933030, 11470720, 17492848, 21866060, 22941440, 34985696, 43732120, 69971392, 87464240, 139942784, 174928480, 279885568, 349856960, 699713920, 1399427840]

約数ペア:

[(1, 1399427840), (2, 699713920), (4, 349856960), (5, 279885568), (8, 174928480), (10, 139942784), (16, 87464240), (20, 69971392), (32, 43732120), (40, 34985696), (61, 22941440), (64, 21866060), (80, 17492848), (122, 11470720), (128, 10933030), (160, 8746424), (244, 5735360), (256, 5466515), (305, 4588288), (320, 4373212), (488, 2867680), (610, 2294144), (640, 2186606), (976, 1433840), (1220, 1147072), (1280, 1093303), (1952, 716920), (2440, 573536), (3904, 358460), (4880, 286768), (7808, 179230), (9760, 143384), (15616, 89615), (17923, 78080), (19520, 71692), (35846, 39040)]