21745724

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5431}}^1$

素因数の和:5466

約数の個数: 48

約数和(自身を含む): 51104256

約数和(自身を除く): 29358532

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5431, 10862, 21724, 38017, 59741, 70603, 76034, 119482, 141206, 152068, 238964, 282412, 418187, 494221, 776633, 836374, 988442, 1553266, 1672748, 1976884, 3106532, 5436431, 10872862, 21745724]

約数ペア:

[(1, 21745724), (2, 10872862), (4, 5436431), (7, 3106532), (11, 1976884), (13, 1672748), (14, 1553266), (22, 988442), (26, 836374), (28, 776633), (44, 494221), (52, 418187), (77, 282412), (91, 238964), (143, 152068), (154, 141206), (182, 119482), (286, 76034), (308, 70603), (364, 59741), (572, 38017), (1001, 21724), (2002, 10862), (4004, 5431)]