21085760

素因数分解:

$2^6\times 5^1\times {\mathrm{131}}^1\times {\mathrm{503}}^1$

素因数の和:651

約数の個数: 56

約数和(自身を含む): 50694336

約数和(自身を除く): 29608576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 131, 160, 262, 320, 503, 524, 655, 1006, 1048, 1310, 2012, 2096, 2515, 2620, 4024, 4192, 5030, 5240, 8048, 8384, 10060, 10480, 16096, 20120, 20960, 32192, 40240, 41920, 65893, 80480, 131786, 160960, 263572, 329465, 527144, 658930, 1054288, 1317860, 2108576, 2635720, 4217152, 5271440, 10542880, 21085760]

約数ペア:

[(1, 21085760), (2, 10542880), (4, 5271440), (5, 4217152), (8, 2635720), (10, 2108576), (16, 1317860), (20, 1054288), (32, 658930), (40, 527144), (64, 329465), (80, 263572), (131, 160960), (160, 131786), (262, 80480), (320, 65893), (503, 41920), (524, 40240), (655, 32192), (1006, 20960), (1048, 20120), (1310, 16096), (2012, 10480), (2096, 10060), (2515, 8384), (2620, 8048), (4024, 5240), (4192, 5030)]