20120320

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1429}}^1$

素因数の和:1461

約数の個数: 72

約数和(自身を含む): 52612560

約数和(自身を除く): 32492240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1429, 1760, 2816, 2858, 3520, 5716, 7040, 7145, 11432, 14080, 14290, 15719, 22864, 28580, 31438, 45728, 57160, 62876, 78595, 91456, 114320, 125752, 157190, 182912, 228640, 251504, 314380, 365824, 457280, 503008, 628760, 914560, 1006016, 1257520, 1829120, 2012032, 2515040, 4024064, 5030080, 10060160, 20120320]

約数ペア:

[(1, 20120320), (2, 10060160), (4, 5030080), (5, 4024064), (8, 2515040), (10, 2012032), (11, 1829120), (16, 1257520), (20, 1006016), (22, 914560), (32, 628760), (40, 503008), (44, 457280), (55, 365824), (64, 314380), (80, 251504), (88, 228640), (110, 182912), (128, 157190), (160, 125752), (176, 114320), (220, 91456), (256, 78595), (320, 62876), (352, 57160), (440, 45728), (640, 31438), (704, 28580), (880, 22864), (1280, 15719), (1408, 14290), (1429, 14080), (1760, 11432), (2816, 7145), (2858, 7040), (3520, 5716)]