20212218

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5081}}^1$

素因数の和:5119

約数の個数: 48

約数和(自身を含む): 49945896

約数和(自身を除く): 29733678

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5081, 10162, 15243, 30486, 45729, 66053, 86377, 91458, 132106, 172754, 198159, 259131, 396318, 518262, 594477, 777393, 1122901, 1188954, 1554786, 2245802, 3368703, 6737406, 10106109, 20212218]

約数ペア:

[(1, 20212218), (2, 10106109), (3, 6737406), (6, 3368703), (9, 2245802), (13, 1554786), (17, 1188954), (18, 1122901), (26, 777393), (34, 594477), (39, 518262), (51, 396318), (78, 259131), (102, 198159), (117, 172754), (153, 132106), (221, 91458), (234, 86377), (306, 66053), (442, 45729), (663, 30486), (1326, 15243), (1989, 10162), (3978, 5081)]