21071892

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 50950592

約数和(自身を除く): 29878700

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 97, 129, 172, 194, 258, 291, 388, 421, 516, 582, 842, 1164, 1263, 1684, 2526, 4171, 5052, 8342, 12513, 16684, 18103, 25026, 36206, 40837, 50052, 54309, 72412, 81674, 108618, 122511, 163348, 217236, 245022, 490044, 1755991, 3511982, 5267973, 7023964, 10535946, 21071892]

約数ペア:

[(1, 21071892), (2, 10535946), (3, 7023964), (4, 5267973), (6, 3511982), (12, 1755991), (43, 490044), (86, 245022), (97, 217236), (129, 163348), (172, 122511), (194, 108618), (258, 81674), (291, 72412), (388, 54309), (421, 50052), (516, 40837), (582, 36206), (842, 25026), (1164, 18103), (1263, 16684), (1684, 12513), (2526, 8342), (4171, 5052)]