1228800

素因数分解:

$2^{14}\times 3^1\times 5^2$

素因数の和:41

約数の個数: 90

約数和(自身を含む): 4063108

約数和(自身を除く): 2834308

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 64, 75, 80, 96, 100, 120, 128, 150, 160, 192, 200, 240, 256, 300, 320, 384, 400, 480, 512, 600, 640, 768, 800, 960, 1024, 1200, 1280, 1536, 1600, 1920, 2048, 2400, 2560, 3072, 3200, 3840, 4096, 4800, 5120, 6144, 6400, 7680, 8192, 9600, 10240, 12288, 12800, 15360, 16384, 19200, 20480, 24576, 25600, 30720, 38400, 40960, 49152, 51200, 61440, 76800, 81920, 102400, 122880, 153600, 204800, 245760, 307200, 409600, 614400, 1228800]

約数ペア:

[(1, 1228800), (2, 614400), (3, 409600), (4, 307200), (5, 245760), (6, 204800), (8, 153600), (10, 122880), (12, 102400), (15, 81920), (16, 76800), (20, 61440), (24, 51200), (25, 49152), (30, 40960), (32, 38400), (40, 30720), (48, 25600), (50, 24576), (60, 20480), (64, 19200), (75, 16384), (80, 15360), (96, 12800), (100, 12288), (120, 10240), (128, 9600), (150, 8192), (160, 7680), (192, 6400), (200, 6144), (240, 5120), (256, 4800), (300, 4096), (320, 3840), (384, 3200), (400, 3072), (480, 2560), (512, 2400), (600, 2048), (640, 1920), (768, 1600), (800, 1536), (960, 1280), (1024, 1200)]