164495360

素因数分解:

$2^{17}\times 5^1\times {\mathrm{251}}^1$

素因数の和:290

約数の個数: 72

約数和(自身を含む): 396360216

約数和(自身を除く): 231864856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 251, 256, 320, 502, 512, 640, 1004, 1024, 1255, 1280, 2008, 2048, 2510, 2560, 4016, 4096, 5020, 5120, 8032, 8192, 10040, 10240, 16064, 16384, 20080, 20480, 32128, 32768, 40160, 40960, 64256, 65536, 80320, 81920, 128512, 131072, 160640, 163840, 257024, 321280, 327680, 514048, 642560, 655360, 1028096, 1285120, 2056192, 2570240, 4112384, 5140480, 8224768, 10280960, 16449536, 20561920, 32899072, 41123840, 82247680, 164495360]

約数ペア:

[(1, 164495360), (2, 82247680), (4, 41123840), (5, 32899072), (8, 20561920), (10, 16449536), (16, 10280960), (20, 8224768), (32, 5140480), (40, 4112384), (64, 2570240), (80, 2056192), (128, 1285120), (160, 1028096), (251, 655360), (256, 642560), (320, 514048), (502, 327680), (512, 321280), (640, 257024), (1004, 163840), (1024, 160640), (1255, 131072), (1280, 128512), (2008, 81920), (2048, 80320), (2510, 65536), (2560, 64256), (4016, 40960), (4096, 40160), (5020, 32768), (5120, 32128), (8032, 20480), (8192, 20080), (10040, 16384), (10240, 16064)]