20120960

素因数分解:

$2^7\times 5^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 48654000

約数和(自身を除く): 28533040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 149, 160, 211, 298, 320, 422, 596, 640, 745, 844, 1055, 1192, 1490, 1688, 2110, 2384, 2980, 3376, 4220, 4768, 5960, 6752, 8440, 9536, 11920, 13504, 16880, 19072, 23840, 27008, 31439, 33760, 47680, 62878, 67520, 95360, 125756, 135040, 157195, 251512, 314390, 503024, 628780, 1006048, 1257560, 2012096, 2515120, 4024192, 5030240, 10060480, 20120960]

約数ペア:

[(1, 20120960), (2, 10060480), (4, 5030240), (5, 4024192), (8, 2515120), (10, 2012096), (16, 1257560), (20, 1006048), (32, 628780), (40, 503024), (64, 314390), (80, 251512), (128, 157195), (149, 135040), (160, 125756), (211, 95360), (298, 67520), (320, 62878), (422, 47680), (596, 33760), (640, 31439), (745, 27008), (844, 23840), (1055, 19072), (1192, 16880), (1490, 13504), (1688, 11920), (2110, 9536), (2384, 8440), (2980, 6752), (3376, 5960), (4220, 4768)]