21258240

素因数分解:

$2^{13}\times 3^1\times 5^1\times {\mathrm{173}}^1$

素因数の和:207

約数の個数: 112

約数和(自身を含む): 68415408

約数和(自身を除く): 47157168

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, 173, 192, 240, 256, 320, 346, 384, 480, 512, 519, 640, 692, 768, 865, 960, 1024, 1038, 1280, 1384, 1536, 1730, 1920, 2048, 2076, 2560, 2595, 2768, 3072, 3460, 3840, 4096, 4152, 5120, 5190, 5536, 6144, 6920, 7680, 8192, 8304, 10240, 10380, 11072, 12288, 13840, 15360, 16608, 20480, 20760, 22144, 24576, 27680, 30720, 33216, 40960, 41520, 44288, 55360, 61440, 66432, 83040, 88576, 110720, 122880, 132864, 166080, 177152, 221440, 265728, 332160, 354304, 442880, 531456, 664320, 708608, 885760, 1062912, 1328640, 1417216, 1771520, 2125824, 2657280, 3543040, 4251648, 5314560, 7086080, 10629120, 21258240]

約数ペア:

[(1, 21258240), (2, 10629120), (3, 7086080), (4, 5314560), (5, 4251648), (6, 3543040), (8, 2657280), (10, 2125824), (12, 1771520), (15, 1417216), (16, 1328640), (20, 1062912), (24, 885760), (30, 708608), (32, 664320), (40, 531456), (48, 442880), (60, 354304), (64, 332160), (80, 265728), (96, 221440), (120, 177152), (128, 166080), (160, 132864), (173, 122880), (192, 110720), (240, 88576), (256, 83040), (320, 66432), (346, 61440), (384, 55360), (480, 44288), (512, 41520), (519, 40960), (640, 33216), (692, 30720), (768, 27680), (865, 24576), (960, 22144), (1024, 20760), (1038, 20480), (1280, 16608), (1384, 15360), (1536, 13840), (1730, 12288), (1920, 11072), (2048, 10380), (2076, 10240), (2560, 8304), (2595, 8192), (2768, 7680), (3072, 6920), (3460, 6144), (3840, 5536), (4096, 5190), (4152, 5120)]