21131520

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{5503}}^1$

素因数の和:5527

約数の個数: 72

約数和(自身を含む): 67501056

約数和(自身を除く): 46369536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 5503, 11006, 16509, 22012, 27515, 33018, 44024, 55030, 66036, 82545, 88048, 110060, 132072, 165090, 176096, 220120, 264144, 330180, 352192, 440240, 528288, 660360, 704384, 880480, 1056576, 1320720, 1408768, 1760960, 2113152, 2641440, 3521920, 4226304, 5282880, 7043840, 10565760, 21131520]

約数ペア:

[(1, 21131520), (2, 10565760), (3, 7043840), (4, 5282880), (5, 4226304), (6, 3521920), (8, 2641440), (10, 2113152), (12, 1760960), (15, 1408768), (16, 1320720), (20, 1056576), (24, 880480), (30, 704384), (32, 660360), (40, 528288), (48, 440240), (60, 352192), (64, 330180), (80, 264144), (96, 220120), (120, 176096), (128, 165090), (160, 132072), (192, 110060), (240, 88048), (256, 82545), (320, 66036), (384, 55030), (480, 44024), (640, 33018), (768, 27515), (960, 22012), (1280, 16509), (1920, 11006), (3840, 5503)]