21008156

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 41559840

約数和(自身を除く): 20551684

約数列:

[1, 2, 4, 13, 26, 37, 52, 61, 74, 122, 148, 179, 244, 358, 481, 716, 793, 962, 1586, 1924, 2257, 2327, 3172, 4514, 4654, 6623, 9028, 9308, 10919, 13246, 21838, 26492, 29341, 43676, 58682, 86099, 117364, 141947, 172198, 283894, 344396, 404003, 567788, 808006, 1616012, 5252039, 10504078, 21008156]

約数ペア:

[(1, 21008156), (2, 10504078), (4, 5252039), (13, 1616012), (26, 808006), (37, 567788), (52, 404003), (61, 344396), (74, 283894), (122, 172198), (148, 141947), (179, 117364), (244, 86099), (358, 58682), (481, 43676), (716, 29341), (793, 26492), (962, 21838), (1586, 13246), (1924, 10919), (2257, 9308), (2327, 9028), (3172, 6623), (4514, 4654)]