20121440

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1877}}^1$

素因数の和:1959

約数の個数: 48

約数和(自身を含む): 48272112

約数和(自身を除く): 28150672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1877, 2144, 2680, 3754, 5360, 7508, 9385, 10720, 15016, 18770, 30032, 37540, 60064, 75080, 125759, 150160, 251518, 300320, 503036, 628795, 1006072, 1257590, 2012144, 2515180, 4024288, 5030360, 10060720, 20121440]

約数ペア:

[(1, 20121440), (2, 10060720), (4, 5030360), (5, 4024288), (8, 2515180), (10, 2012144), (16, 1257590), (20, 1006072), (32, 628795), (40, 503036), (67, 300320), (80, 251518), (134, 150160), (160, 125759), (268, 75080), (335, 60064), (536, 37540), (670, 30032), (1072, 18770), (1340, 15016), (1877, 10720), (2144, 9385), (2680, 7508), (3754, 5360)]