51281920

素因数分解:

$2^{15}\times 5^1\times {\mathrm{313}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 123467940

約数和(自身を除く): 72186020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 313, 320, 512, 626, 640, 1024, 1252, 1280, 1565, 2048, 2504, 2560, 3130, 4096, 5008, 5120, 6260, 8192, 10016, 10240, 12520, 16384, 20032, 20480, 25040, 32768, 40064, 40960, 50080, 80128, 81920, 100160, 160256, 163840, 200320, 320512, 400640, 641024, 801280, 1282048, 1602560, 2564096, 3205120, 5128192, 6410240, 10256384, 12820480, 25640960, 51281920]

約数ペア:

[(1, 51281920), (2, 25640960), (4, 12820480), (5, 10256384), (8, 6410240), (10, 5128192), (16, 3205120), (20, 2564096), (32, 1602560), (40, 1282048), (64, 801280), (80, 641024), (128, 400640), (160, 320512), (256, 200320), (313, 163840), (320, 160256), (512, 100160), (626, 81920), (640, 80128), (1024, 50080), (1252, 40960), (1280, 40064), (1565, 32768), (2048, 25040), (2504, 20480), (2560, 20032), (3130, 16384), (4096, 12520), (5008, 10240), (5120, 10016), (6260, 8192)]